diff --git a/.gitignore b/.gitignore
index cdf6fd9..fa0dfa4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,23 +14,6 @@ day9.md
day10.md
01_02_03_days_backup.md
test.md
-12_Day
-13_Day
-14_Day
-15_Day
-16_Day
-17_Day
-18_Day
-19_Day
-20_Day
-21_Day
-22_Day
-23_Day
-24_Day
-25_Day
-26_Day
-27_Day
-28_Day
-29_Day
-30_Day
-test.html
\ No newline at end of file
+31_Day
+test.html
+res.js
\ No newline at end of file
diff --git a/01_Day/01_day_starter/varaible.js b/01_Day/01_day_starter/varaible.js
deleted file mode 100644
index f5872af..0000000
--- a/01_Day/01_day_starter/varaible.js
+++ /dev/null
@@ -1,17 +0,0 @@
-// Declaring different variables of different data types
-let firstName = 'Asabeneh' // first name of a person
-let lastName = 'Yetayeh' // last name of a person
-let country = 'Finland' // country
-let city = 'Helsinki' // capital city
-let age = 100 // age in years
-let isMarried = true
-
-// Declaring variables with number values
-const gravity = 9.81 // earth gravity in m/s2
-const boilingPoint = 100 // water boiling point, temperature in oC
-const PI = 3.14 // geometrical constant
-
-// Variables can also be declaring in one line separated by comma
-let name = 'Asabeneh', //name of a person
- job = 'teacher',
- live = 'Finland'
diff --git a/01_Day/01_day_starter/helloworld.js b/01_Day_Introduction/01_day_starter/helloworld.js
similarity index 100%
rename from 01_Day/01_day_starter/helloworld.js
rename to 01_Day_Introduction/01_day_starter/helloworld.js
diff --git a/01_Day/01_day_starter/index.html b/01_Day_Introduction/01_day_starter/index.html
similarity index 100%
rename from 01_Day/01_day_starter/index.html
rename to 01_Day_Introduction/01_day_starter/index.html
diff --git a/01_Day/01_day_starter/introduction.js b/01_Day_Introduction/01_day_starter/introduction.js
similarity index 100%
rename from 01_Day/01_day_starter/introduction.js
rename to 01_Day_Introduction/01_day_starter/introduction.js
diff --git a/01_Day/01_day_starter/main.js b/01_Day_Introduction/01_day_starter/main.js
similarity index 56%
rename from 01_Day/01_day_starter/main.js
rename to 01_Day_Introduction/01_day_starter/main.js
index 4704eb2..2b952bc 100644
--- a/01_Day/01_day_starter/main.js
+++ b/01_Day_Introduction/01_day_starter/main.js
@@ -1,3 +1,4 @@
+// the variable values can be accessed from other variable.js file
console.log(firstName, lastName, country, city, age, isMarried)
console.log(gravity, boilingPoint, PI) // 9.81, 100, 3.14
console.log(name, job, live)
\ No newline at end of file
diff --git a/01_Day_Introduction/01_day_starter/varaible.js b/01_Day_Introduction/01_day_starter/varaible.js
new file mode 100644
index 0000000..62558cb
--- /dev/null
+++ b/01_Day_Introduction/01_day_starter/varaible.js
@@ -0,0 +1,20 @@
+// Declaring different variables of different data types
+
+let firstName = 'Asabeneh' // first name of a person
+let lastName = 'Yetayeh' // last name of a person
+let country = 'Finland' // country
+let city = 'Helsinki' // capital city
+let age = 100 // age in years
+let isMarried = true
+
+// Declaring variables with number values
+
+const gravity = 9.81 // earth gravity in m/s2
+const boilingPoint = 100 // water boiling point, temperature in oC
+const PI = 3.14 // geometrical constant
+
+// Variables can also be declaring in one line separated by comma
+
+let name = 'Asabeneh', //name of a person
+ job = 'teacher',
+ live = 'Finland'
diff --git a/01_Day/variable.js b/01_Day_Introduction/variable.js
similarity index 100%
rename from 01_Day/variable.js
rename to 01_Day_Introduction/variable.js
diff --git a/02_Day/02_day_data_types.md b/02_Day_Data_types/02_day_data_types.md
similarity index 60%
rename from 02_Day/02_day_data_types.md
rename to 02_Day_Data_types/02_day_data_types.md
index 05d1cc0..198ae2b 100644
--- a/02_Day/02_day_data_types.md
+++ b/02_Day_Data_types/02_day_data_types.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Data Types
@@ -14,48 +14,51 @@
-[<< Day 1](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/readMe.md) | [Day 3 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md)
+[<< Day 1](../readMe.md) | [Day 3 >>](../03_Day_Booleans_operators_date/03_booleans_operators_date.md)
-- [📔 Day 2](#%f0%9f%93%94-day-2)
- - [Data types](#data-types)
+- [📔 Day 2](#-day-2)
+ - [Data Types](#data-types)
- [Primitive Data Types](#primitive-data-types)
- [Non-Primitive Data Types](#non-primitive-data-types)
- [Numbers](#numbers)
- - [Declaring number data types](#declaring-number-data-types)
+ - [Declaring Number Data Types](#declaring-number-data-types)
- [Math Object](#math-object)
- - [Random number generator](#random-number-generator)
+ - [Random Number Generator](#random-number-generator)
- [Strings](#strings)
- [String Concatenation](#string-concatenation)
- - [Concatenating using addition operator](#concatenating-using-addition-operator)
+ - [Concatenating Using Addition Operator](#concatenating-using-addition-operator)
- [Long Literal Strings](#long-literal-strings)
- - [Escape Sequences in string](#escape-sequences-in-string)
- - [Template Literals(Template Strings)](#template-literalstemplate-strings)
+ - [Escape Sequences in Strings](#escape-sequences-in-strings)
+ - [Template Literals (Template Strings)](#template-literals-template-strings)
- [String Methods](#string-methods)
- - [Checking Data types and Casting](#checking-data-types-and-casting)
- - [Checking data types](#checking-data-types)
- - [Changing data type(Casting)](#changing-data-typecasting)
+ - [Checking Data Types and Casting](#checking-data-types-and-casting)
+ - [Checking Data Types](#checking-data-types)
+ - [Changing Data Type (Casting)](#changing-data-type-casting)
- [String to Int](#string-to-int)
- [String to Float](#string-to-float)
- [Float to Int](#float-to-int)
-- [💻 Day 2: Exercises](#%f0%9f%92%bb-day-2-exercises)
+ - [💻 Day 2: Exercises](#-day-2-exercises)
+ - [Exercise: Level 1](#exercise-level-1)
+ - [Exercise: Level 2](#exercise-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 2
-## Data types
+## Data Types
-In the previous section, we mentioned a little bit about data types. Data or values have data types. Data types describe the characteristics of data. Data types can be divided into two
+In the previous section, we mentioned a little bit about data types. Data or values have data types. Data types describe the characteristics of data. Data types can be divided into two:
1. Primitive data types
2. Non-primitive data types(Object References)
### Primitive Data Types
-Primitive data types in JavaScript includes:
+Primitive data types in JavaScript include:
1. Numbers - Integers, floats
- 2. Strings - Any data under single or double quote
+ 2. Strings - Any data under single quote, double quote or backtick quote
3. Booleans - true or false value
4. Null - empty value or no value
5. Undefined - a declared variable without a value
@@ -66,21 +69,22 @@ Non-primitive data types in JavaScript includes:
2. Functions
3. Arrays
-Now, let us see what exactly mean primitive and non-primitive data types.
-*Primitive* data types are immutable(non-modifiable) data types. Once a primitive data type is created we can not modify it.
+Now, let us see what exactly primitive and non-primitive data types mean.
+*Primitive* data types are immutable(non-modifiable) data types. Once a primitive data type is created we cannot modify it.
+
**Example:**
```js
let word = 'JavaScript'
```
-If we try to modify the string stored in variable *word*, JavaScript will raise an error. Any data type under a single quote, double-quote, or backtick is a string data type.
+If we try to modify the string stored in variable *word*, JavaScript should raise an error. Any data type under a single quote, double quote, or backtick quote is a string data type.
```js
word[0] = 'Y'
```
-This expression does not change the string stored in the variable *word*. So, we can say that strings are not modifiable or immutable.
+This expression does not change the string stored in the variable *word*. So, we can say that strings are not modifiable or in other words immutable.
Primitive data types are compared by its values. Let us compare different data values. See the example below:
```js
@@ -112,7 +116,7 @@ nums[0] = 10
console.log(nums) // [10, 2, 3]
```
-As you can see, an array in which a non-primitive data type is mutable. Non-primitive data types can not be compared by value. Even if two non-primitive data types have the same properties and values, they are not strictly equal.
+As you can see, an array, which is a non-primitive data type is mutable. Non-primitive data types cannot be compared by value. Even if two non-primitive data types have the same properties and values, they are not strictly equal.
```js
let nums = [1, 2, 3]
@@ -132,11 +136,11 @@ role:'teaching',
country:'Finland'
}
-console.log(userOne == userTwo)
+console.log(userOne == userTwo) // false
```
-Rule of thumb, we do not compare non-primitive data types. Do not compare array, function, or object.
-Non-primitive values are referred to as reference types because they are being compared by reference instead of value. Two objects are only strictly equal if they refer to the same underlying object.
+Rule of thumb, we do not compare non-primitive data types. Do not compare arrays, functions, or objects.
+Non-primitive values are referred to as reference types, because they are being compared by reference instead of value. Two objects are only strictly equal if they refer to the same underlying object.
```js
let nums = [1, 2, 3]
@@ -160,17 +164,17 @@ If you have a hard time understanding the difference between primitive data type
## Numbers
Numbers are integers and decimal values which can do all the arithmetic operations.
-Lets' see some examples of Numbers.
+Let's see some examples of Numbers.
-### Declaring number data types
+### Declaring Number Data Types
```js
let age = 35
-const gravity = 9.81 //we use const for non-changing values, gravitational constant in m/s2
+const gravity = 9.81 // we use const for non-changing values, gravitational constant in m/s2
let mass = 72 // mass in Kilogram
const PI = 3.14 // pi a geometrical constant
-//More Examples
+// More Examples
const boilingPoint = 100 // temperature in oC, boiling point of water which is a constant
const bodyTemp = 37 // oC average human body temperature, which is a constant
@@ -184,22 +188,22 @@ In JavaScript the Math Object provides a lots of methods to work with numbers.
```js
const PI = Math.PI
-console.log(PI) // 3.141592653589793
+console.log(PI) // 3.141592653589793
// Rounding to the closest number
// if above .5 up if less 0.5 down rounding
-console.log(Math.round(PI)) // 3 to round values to the nearest number
+console.log(Math.round(PI)) // 3 to round values to the nearest number
-console.log(Math.round(9.81)) // 10
+console.log(Math.round(9.81)) // 10
-console.log(Math.floor(PI)) // 3 rounding down
+console.log(Math.floor(PI)) // 3 rounding down
-console.log(Math.ceil(PI)) // 4 rounding up
+console.log(Math.ceil(PI)) // 4 rounding up
-console.log(Math.min(-5, 3, 20, 4,5, 10)) // -5, returns the minimum value
+console.log(Math.min(-5, 3, 20, 4, 5, 10)) // -5, returns the minimum value
-console.log(Math.max(-5, 3, 20, 4,5, 10)) // 20, returns the maximum value
+console.log(Math.max(-5, 3, 20, 4, 5, 10)) // 20, returns the maximum value
const randNum = Math.random() // creates random number between 0 to 0.999999
console.log(randNum)
@@ -210,22 +214,22 @@ const num = Math.floor(Math.random () * 11) // creates random number between 0 a
console.log(num)
//Absolute value
-console.log(Math.abs(-10)) //10
+console.log(Math.abs(-10)) // 10
//Square root
console.log(Math.sqrt(100)) // 10
-console.log(Math.sqrt(2)) //1.4142135623730951
+console.log(Math.sqrt(2)) // 1.4142135623730951
// Power
-console.log(Math.pow(3, 2)) // 9
+console.log(Math.pow(3, 2)) // 9
-console.log(Math.E) // 2.718
+console.log(Math.E) // 2.718
// Logarithm
-//Returns the natural logarithm of base E of x, Math.log(x)
-console.log(Math.log(2)) // 0.6931471805599453
-console.log(Math.log(10)) // 2.302585092994046
+// Returns the natural logarithm with base E of x, Math.log(x)
+console.log(Math.log(2)) // 0.6931471805599453
+console.log(Math.log(10)) // 2.302585092994046
// Trigonometry
Math.sin(0)
@@ -235,15 +239,15 @@ Math.cos(0)
Math.cos(60)
```
-#### Random number generator
+#### Random Number Generator
The JavaScript Math Object has a random() method number generator which generates number from 0 to 0.999999999...
```js
-let randomNum = Math.random() // generates 0 to 0.999
+let randomNum = Math.random() // generates 0 to 0.999...
```
-Now, let us see how we can use random() method to generate a random number between 0 and 10 inclusive.
+Now, let us see how we can use random() method to generate a random number between 0 and 10:
```js
let randomNum = Math.random() // generates 0 to 0.999
@@ -257,8 +261,8 @@ console.log(randomNumRoundToFloor) // this gives between 0 and 10
## Strings
-Strings are texts, which are under **_single_** or **_double_** quote. To declare a string, we need a variable name, assignment operator, a value under a single quote, double-quote, or backtick.
-Lets' see some examples of string:
+Strings are texts, which are under **_single_** , **_double_**, **_back-tick_** quote. To declare a string, we need a variable name, assignment operator, a value under a single quote, double quote, or backtick quote.
+Let's see some examples of strings:
```js
let space = ' ' // an empty space string
@@ -268,22 +272,14 @@ let country = 'Finland'
let city = 'Helsinki'
let language = 'JavaScript'
let job = 'teacher'
+let quote = "The saying,'Seeing is Believing' is not correct in 2020."
+let quotWithBackTick = `The saying,'Seeing is Believing' is not correct in 2020.`
```
### String Concatenation
-Connect two or more strings together is called concatenation.
-
-```js
-// Declaring different variables of different data types
-let space = ' '
-let firstName = 'Asabeneh'
-let lastName = 'Yetayeh'
-let country = 'Finland'
-let city = 'Helsinki'
-let language = 'JavaScript'
-let job = 'teacher'
-```
+Connecting two or more strings together is called concatenation.
+Using the strings declared in the previous String section:
```js
let fullName = firstName + space + lastName; // concatenation, merging two string together.
@@ -294,11 +290,11 @@ console.log(fullName);
Asabeneh Yetayeh
```
-We can concatenate string in different ways.
+We can concatenate strings in different ways.
-#### Concatenating using addition operator
+#### Concatenating Using Addition Operator
-Concatenating using the addition operator is an old way. This way of concatenating is tedious and error-prone. It is good to know how to concatenate this way, but I strongly suggest to use the second way.
+Concatenating using the addition operator is an old way. This way of concatenating is tedious and error-prone. It is good to know how to concatenate this way, but I strongly suggest to use the ES6 template strings (explained later on).
```js
// Declaring different variables of different data types
@@ -310,9 +306,10 @@ let city = 'Helsinki'
let language = 'JavaScript'
let job = 'teacher'
let age = 250
-let fullName = firstName + space + lastName
-let personInfoOne = fullName + '. I am ' + age + '. I live in ' + country; // ES5
+
+let fullName =firstName + space + lastName
+let personInfoOne = fullName + '. I am ' + age + '. I live in ' + country; // ES5 string addition
console.log(personInfoOne)
```
@@ -335,35 +332,52 @@ to global audience and I started a Python challenge from November 20 - December
It was one of the most rewarding and inspiring experience.\
Now, we are in 2020. I am enjoying preparing the 30DaysOfJavaScript challenge and \
I hope you are enjoying too."
+
console.log(paragraph)
```
-#### Escape Sequences in string
+#### Escape Sequences in Strings
-In JavaScript and other programming language \ followed by some characters is an escape sequence. Let's see the most common escape characters:
+In JavaScript and other programming languages \ followed by some characters is an escape sequence. Let's see the most common escape characters:
- \n: new line
-- \t: Tab means(8 spaces)
+- \t: Tab, means 8 spaces
- \\\\: Back slash
- \\': Single quote (')
-- \\":Double quote (")
+- \\": Double quote (")
```js
-console.log('I hope every one is enjoying the 30 Days Of JavaScript challenge.\nDo you ?') // line break
+console.log('I hope everyone is enjoying the 30 Days Of JavaScript challenge.\nDo you ?') // line break
console.log('Days\tTopics\tExercises')
console.log('Day 1\t3\t5')
console.log('Day 2\t3\t5')
console.log('Day 3\t3\t5')
console.log('Day 4\t3\t5')
-console.log('This is a back slash symbol (\\)') // To write a back slash
+console.log('This is a backslash symbol (\\)') // To write a backslash
console.log('In every programming language it starts with \"Hello, World!\"')
console.log("In every programming language it starts with \'Hello, World!\'")
-console.log('The saying \'Seeing is Believing\' is\'t correct in 2020')
+console.log('The saying \'Seeing is Believing\' isn\'t correct in 2020')
+```
+
+Output in console:
+
+```sh
+I hope everyone is enjoying the 30 Days Of JavaScript challenge.
+Do you ?
+Days Topics Exercises
+Day 1 3 5
+Day 2 3 5
+Day 3 3 5
+Day 4 3 5
+This is a backslash symbol (\)
+In every programming language it starts with "Hello, World!"
+In every programming language it starts with 'Hello, World!'
+The saying 'Seeing is Believing' isn't correct in 2020
```
-#### Template Literals(Template Strings)
+#### Template Literals (Template Strings)
-To create a template string, we use two backticks. We can inject data as expression inside a template string. To inject data, we enclose the expression with a curly bracket({}) followed by a $ sign. See the syntax below.
+To create a template strings, we use two back-ticks. We can inject data as expressions inside a template string. To inject data, we enclose the expression with a curly bracket({}) preceded by a $ sign. See the syntax below.
```js
//Syntax
@@ -403,7 +417,7 @@ I am Asabeneh Yetayeh. I am 250. I live in Finland.
I am Asabeneh Yetayeh. I live in Helsinki, Finland. I am a teacher. I teach JavaScript.
```
-Using a string template or string interpolation method, we can add expression, which could be a value or some operations(comparison, arithmetic operations, ternary operation).
+Using a string template or string interpolation method, we can add expressions, which could be a value, or some operations (comparison, arithmetic operations, ternary operation).
```js
let a = 2
@@ -417,19 +431,20 @@ console.log(`${a} is greater than ${b}: ${a > b}`)
### String Methods
-Everything in JavaScript is an object. A string is a primitive data type that means we can not modify once it is created. The string object has many string methods. There are different string methods that can help us to work with strings.
+Everything in JavaScript is an object. A string is a primitive data type that means we can not modify it once it is created. The string object has many string methods. There are different string methods that can help us to work with strings.
1. *length*: The string *length* method returns the number of characters in a string included empty space.
- **Example:**
- ```js
- let js = 'JavaScript'
- console.log(js.length) // 10
- let firstName = 'Asabeneh'
- console.log(firstName.length) // 8
- ```
+**Example:**
+
+```js
+let js = 'JavaScript'
+console.log(js.length) // 10
+let firstName = 'Asabeneh'
+console.log(firstName.length) // 8
+```
-2. *Accessing characters in a string*: We can access each character in a string using its index. In programming, counting starts from 0. The first index of the string is zero, and the last index is one minus the length of the string.
+2. *Accessing characters in a string*: We can access each character in a string using its index. In programming, counting starts from 0. The first index of the string is zero, and the last index is the length of the string minus one.
@@ -453,7 +468,7 @@ console.log(lastIndex) // 9
console.log(string[lastIndex]) // t
```
-1. *toUpperCase()*: this method changes the string to uppercase letters.
+3. *toUpperCase()*: this method changes the string to uppercase letters.
```js
let string = 'JavaScript'
@@ -495,7 +510,7 @@ let country = 'Finland'
console.log(country.substr(3, 4)) // land
```
-6. *substring()*: It takes two arguments, the starting index and the stopping index but it doesn't include the stopping index.
+6. *substring()*: It takes two arguments, the starting index and the stopping index but it doesn't include the character at the stopping index.
```js
let string = 'JavaScript'
@@ -516,17 +531,17 @@ console.log(country.substring(3)) // land
```js
let string = '30 Days Of JavaScript'
-console.log(string.split()) // ["30 Days Of JavaScript"]
-console.log(string.split(' ')) // ["30", "Days", "Of", "JavaScript"]
+console.log(string.split()) // Changes to an array -> ["30 Days Of JavaScript"]
+console.log(string.split(' ')) // Split to an array at space -> ["30", "Days", "Of", "JavaScript"]
let firstName = 'Asabeneh'
-console.log(firstName.split()) // ["Asabeneh"]
-console.log(firstName.split('')) // ["A", "s", "a", "b", "e", "n", "e", "h"]
+console.log(firstName.split()) // Change to an array - > ["Asabeneh"]
+console.log(firstName.split('')) // Split to an array at each letter -> ["A", "s", "a", "b", "e", "n", "e", "h"]
let countries = 'Finland, Sweden, Norway, Denmark, and Iceland'
-console.log(countries.split(',')) // ["Finland", " Sweden", " Norway", " Denmark", " and Iceland"]
+console.log(countries.split(',')) // split to any array at comma -> ["Finland", " Sweden", " Norway", " Denmark", " and Iceland"]
console.log(countries.split(', ')) // ["Finland", "Sweden", "Norway", "Denmark", "and Iceland"]
```
@@ -535,13 +550,13 @@ console.log(countries.split(', ')) // ["Finland", "Sweden", "Norway", "Denmark
```js
let string = ' 30 Days Of JavaScript '
-console.log(string)
+console.log(string)
console.log(string.trim(' '))
let firstName = ' Asabeneh '
console.log(firstName)
-console.log(firstName.trim())
+console.log(firstName.trim()) // still removes spaces at the beginning and the end of the string
```
```sh
@@ -551,13 +566,13 @@ console.log(firstName.trim())
Asabeneh
```
-9. *includes()*: It takes a substring argument and it check if substring argument exists in the string. *includes()* returns a boolean. It checks if a substring exist in a string and it returns true if it exists and false if it doesn't exist.
+9. *includes()*: It takes a substring argument and it checks if substring argument exists in the string. *includes()* returns a boolean. If a substring exist in a string, it returns true, otherwise it returns false.
```js
let string = '30 Days Of JavaScript'
console.log(string.includes('Days')) // true
-console.log(string.includes('days')) // false
+console.log(string.includes('days')) // false - it is case sensitive!
console.log(string.includes('Script')) // true
console.log(string.includes('script')) // false
console.log(string.includes('java')) // false
@@ -571,7 +586,7 @@ console.log(country.includes('land')) // true
console.log(country.includes('Land')) // false
```
-10. *replace()*: takes to parameter the old substring and new substring.
+10. *replace()*: takes as a parameter the old substring and a new substring.
```js
string.replace(oldsubstring, newsubstring)
@@ -599,7 +614,7 @@ let lastIndex = string.length - 1
console.log(string.charAt(lastIndex)) // t
```
-12. *charCodeAt()*: Takes index and it returns char code(ASCII number) of the value at that index
+12. *charCodeAt()*: Takes index and it returns char code (ASCII number) of the value at that index
```js
string.charCodeAt(index)
@@ -607,14 +622,14 @@ string.charCodeAt(index)
```js
let string = '30 Days Of JavaScript'
-console.log(string.charCodeAt(3)) // D ASCII number is 51
+console.log(string.charCodeAt(3)) // D ASCII number is 68
let lastIndex = string.length - 1
console.log(string.charCodeAt(lastIndex)) // t ASCII is 116
```
-13. *indexOf()*: Takes takes a substring and if the substring exists in a string it returns the first position of the substring if does not exist it returns -1
+13. *indexOf()*: Takes a substring and if the substring exists in a string it returns the first position of the substring if does not exist it returns -1
```js
string.indexOf(substring)
@@ -632,10 +647,12 @@ console.log(string.indexOf('Script')) //15
console.log(string.indexOf('script')) // -1
```
-14. *lastIndexOf()*: Takes takes a substring and if the substring exists in a string it returns the last position of the substring if it does not exist it returns -1
+14. *lastIndexOf()*: Takes a substring and if the substring exists in a string it returns the last position of the substring if it does not exist it returns -1
+
```js
-string.lastIndexOf(index)
+//syntax
+string.lastIndexOf(substring)
```
```js
@@ -646,7 +663,7 @@ console.log(string.lastIndexOf('you')) // 63
console.log(string.lastIndexOf('JavaScript')) // 38
```
-15. *concat()*: it takes many substrings and creates concatenation.
+15. *concat()*: it takes many substrings and joins them.
```js
string.concat(substring, substring, substring)
@@ -681,18 +698,18 @@ console.log(country.startsWith('fin')) // false
console.log(country.startsWith('land')) // false
```
-17. *endsWith*: it takes a substring as an argument and it checks if the string starts with that specified substring. It returns a boolean(true or false).
+17. *endsWith*: it takes a substring as an argument and it checks if the string ends with that specified substring. It returns a boolean(true or false).
```js
string.endsWith(substring)
```
```js
-let string = 'Love is the best to in this world'
+let string = 'Love is the most powerful feeling in the world'
console.log(string.endsWith('world')) // true
console.log(string.endsWith('love')) // false
-console.log(string.endsWith('in this world')) // true
+console.log(string.endsWith('in the world')) // true
let country = 'Finland'
@@ -701,7 +718,7 @@ console.log(country.endsWith('fin')) // false
console.log(country.endsWith('Fin')) // false
```
-18. *search*: it takes a substring as an argument and it returns the index of the first match.
+18. *search*: it takes a substring as an argument and it returns the index of the first match. The search value can be a string or a regular expression pattern.
```js
string.search(substring)
@@ -709,7 +726,8 @@ string.search(substring)
```js
let string = 'I love JavaScript. If you do not love JavaScript what else can you love.'
-console.log(string.search('love')) // 2
+console.log(string.search('love')) // 2
+console.log(string.search(/javascript/gi)) // 7
```
19. *match*: it takes a substring or regular expression pattern as an argument and it returns an array if there is match if not it returns null. Let us see how a regular expression pattern looks like. It starts with / sign and ends with / sign.
@@ -741,10 +759,10 @@ let pattern = /love/gi
console.log(string.match(pattern)) // ["love", "love", "love"]
```
-Let us extract numbers from text using regular expression. This is not regular expression section, no panic, we will cover regular expression in other section.
+Let us extract numbers from text using a regular expression. This is not the regular expression section, do not panic! We will cover regular expressions later on.
```js
-let txt = 'In 2019, I run 30 Days of Python. Now, in 2020 I super exited to start this challenge'
+let txt = 'In 2019, I ran 30 Days of Python. Now, in 2020 I am super exited to start this challenge'
let regEx = /\d+/
// d with escape character means d not a normal d instead acts a digit
@@ -755,7 +773,7 @@ console.log(txt.match(regEx)) // ["2", "0", "1", "9", "3", "0", "2", "0", "2",
console.log(txt.match(/\d+/g)) // ["2019", "30", "2020"]
```
-20. *repeat()*: it takes a number argument and it returned the repeated version of the string.
+20. *repeat()*: it takes a number as argument and it returns the repeated version of the string.
```js
string.repeat(n)
@@ -766,12 +784,13 @@ let string = 'love'
console.log(string.repeat(10)) // lovelovelovelovelovelovelovelovelovelove
```
-## Checking Data types and Casting
+## Checking Data Types and Casting
-### Checking data types
+### Checking Data Types
-- Check Data types: To check the data type of a certain data type we use the _typeof_ and we also change one data type to another.
- **Example:**
+To check the data type of a certain variable we use the _typeof_ method.
+
+**Example:**
```js
// Different javascript data types
@@ -796,14 +815,14 @@ console.log(typeof undefined) // undefined
console.log(typeof null) // object
```
-### Changing data type(Casting)
+### Changing Data Type (Casting)
-- Casting: Converting one data type to another data type. We use _parseInt()_, _parsefloat()_,_Number()_, _+ sign_, _str()_
+- Casting: Converting one data type to another data type. We use _parseInt()_, _parseFloat()_, _Number()_, _+ sign_, _str()_
When we do arithmetic operations string numbers should be first converted to integer or float if not it returns an error.
#### String to Int
-We can convert string number to a number. Any number inside a quote is a string number. An example of a string number: '10', '5', etc.
+We can convert string number to a number. Any number inside a quote is a string number. An example of a string number: '10', '5', etc.
We can convert string to number using the following methods:
- parseInt()
@@ -832,7 +851,7 @@ console.log(numInt) // 10
#### String to Float
-We can convert string float number to a float number. Any float number inside a quote is a string float number. An example of a string float number: '9.81', '3.14', '1.44', etc.
+We can convert string float number to a float number. Any float number inside a quote is a string float number. An example of a string float number: '9.81', '3.14', '1.44', etc.
We can convert string float to number using the following methods:
- parseFloat()
@@ -874,76 +893,84 @@ let numInt = parseInt(num)
console.log(numInt) // 9
```
-🌕 You are awesome. You have just completed day 2 challenges and you are two steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
+🌕 You are awesome. You have just completed day 2 challenges and you are two steps ahead on your way to greatness. Now do some exercises for your brain and for your muscle.
+
+## 💻 Day 2: Exercises
-# 💻 Day 2: Exercises
+### Exercise: Level 1
-1. Declare a variable name challenge and assign it to an initial value **'30 Days Of JavaScript'**.
+1. Declare a variable named challenge and assign it to an initial value **'30 Days Of JavaScript'**.
2. Print the string on the browser console using __console.log()__
3. Print the __length__ of the string on the browser console using _console.log()_
-4. Change all the string to capital letters using __toUpperCase()__ method
-5. Change all the string to lowercase letters using __toLowerCase()__ method
-6. Cut(slice) out the first word of the string using __substr()__ or __substring()__ method
+4. Change all the string characters to capital letters using __toUpperCase()__ method
+5. Change all the string characters to lowercase letters using __toLowerCase()__ method
+6. Cut (slice) out the first word of the string using __substr()__ or __substring()__ method
7. Slice out the phrase *Days Of JavaScript* from *30 Days Of JavaScript*.
-8. Use __substr__ to slice out the phase __because because because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
-9. Check if the string contains a word __Script__ using __includes()__ method
-10. Split the __string__ into __array__ using __split()__ method
-11. Split the string 30 Days Of JavaScript at the space using __split()__ method
-12. 'Facebook, Google, Microsoft, Apple, IBM, Oracle, Amazon' __split__ the string at the comma and change it to an array.
-13. Change 30 Days Of JavaScript to 30 Days Of Python using __replace()__ method.
-14. What is character at index 15 in '30 Days Of JavaScript' string use __charAt()__ method.
-15. What is the character code of J in '30 Days Of JavaScript' string using __charCodeAt()__
-16. Use __indexOf__ to determine the position of the first occurrence of a in 30 Days Of JavaScript
-17. Use __lastIndexOf__ to determine the position of the last occurrence of a in 30 Days Of JavaScript.
-18. Use __indexOf__ to find the position of the first occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
-19. Use __lastIndexOf__ to find the position of the last occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
-20. Use __search__ to find the position of the first occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
-21. Use __trim()__ to remove if there is trailing whitespace at the beginning and the end of a string.E.g ' 30 Days Of JavaScript '.
-22. Use __startsWith()__ method with the string *30 Days Of JavaScript* make the result true
-23. Use __endsWith()__ method with the string *30 Days Of JavaScript* make the result true
-24. Use __match()__ method to find all the a’s in 30 Days Of JavaScript
-25. Use __match()__ to count the number all because's in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
-26. Use __concat()__ and merge '30 Days of' and 'JavaScript' to a single string, '30 Days Of JavaScript'
-27. Use __repeat()__ method to print 30 Days Of JavaScript 2 times
-28. ** 'Love is the best thing in this world. Some found their love and some are still looking for their love.' Count the number of word love in this sentence.
-29. ** Calculate the total annual income of the person by extract the numbers from the following text. 'He earns 5000 euro from salary per month, 10000 euro annual bonus, 15000 euro online courses per month.'
-30. ** Clean the following text and find the most frequent word(hint, use replace and regular express).
-
-```js
- const sentence = '%I $am@% a %tea@cher%, &and& I lo%#ve %tea@ching%;. There $is nothing; &as& mo@re rewarding as educa@ting &and& @emp%o@wering peo@ple. ;I found tea@ching m%o@re interesting tha@n any other %jo@bs. %Do@es thi%s mo@tivate yo@u to be a tea@cher!? %Th#is 30#Days&OfJavaScript &is also $the $result of &love& of tea&ching'
-```
-
-31. Using console.log() print out the following statement.
-
-```sh
-The quote 'There is no exercise better for the heart than reaching down and lifting people up.' by John Holmes teaches us to help to one another.
-```
-
-32. Using console.log() print out the following quote by Mother Teresa.
-
-```sh
-"Love is not patronizing and charity isn't about pity, it is about love. Charity and love are the same -- with charity you give love, so don't just give money but reach out your hand instead."
-```
-
-33. Check if 'on' is found in both python and jargon
-34. _I hope this course is not full of jargon_. Check if _jargon_ is in the sentence.
-35. Generate a random number between 0 and 100 inclusive.
-36. Generate a random number between 50 and 100 inclusive.
-37. Generate a random number between 0 and 255 inclusive.
-38. Access the 'JavaScript' string characters using a random number.
-39. Use console.log() and escape characters to print the following pattern.
-
- ```js
- 1 1 1 1 1
- 2 1 2 4 8
- 3 1 3 9 27
- 4 1 4 16 64
- 5 1 5 25 125
- ```
-
-40. Check if typeof '10' is exactly equal to 10. If not make it exactly equal.
-41. Check if parseInt('9.8') is equal to 10 if not make it exactly equal with 10.
+8. Check if the string contains a word __Script__ using __includes()__ method
+9. Split the __string__ into an __array__ using __split()__ method
+10. Split the string 30 Days Of JavaScript at the space using __split()__ method
+11. 'Facebook, Google, Microsoft, Apple, IBM, Oracle, Amazon' __split__ the string at the comma and change it to an array.
+12. Change 30 Days Of JavaScript to 30 Days Of Python using __replace()__ method.
+13. What is character at index 15 in '30 Days Of JavaScript' string? Use __charAt()__ method.
+14. What is the character code of J in '30 Days Of JavaScript' string using __charCodeAt()__
+15. Use __indexOf__ to determine the position of the first occurrence of __a__ in 30 Days Of JavaScript
+16. Use __lastIndexOf__ to determine the position of the last occurrence of __a__ in 30 Days Of JavaScript.
+17. Use __indexOf__ to find the position of the first occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
+18. Use __lastIndexOf__ to find the position of the last occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
+19. Use __search__ to find the position of the first occurrence of the word __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
+20. Use __trim()__ to remove any trailing whitespace at the beginning and the end of a string.E.g ' 30 Days Of JavaScript '.
+21. Use __startsWith()__ method with the string *30 Days Of JavaScript* and make the result true
+22. Use __endsWith()__ method with the string *30 Days Of JavaScript* and make the result true
+23. Use __match()__ method to find all the __a__’s in 30 Days Of JavaScript
+24. Use __concat()__ and merge '30 Days of' and 'JavaScript' to a single string, '30 Days Of JavaScript'
+25. Use __repeat()__ method to print 30 Days Of JavaScript 2 times
+
+### Exercise: Level 2
+
+1. Using console.log() print out the following statement:
+
+ ```sh
+ The quote 'There is no exercise better for the heart than reaching down and lifting people up.' by John Holmes teaches us to help one another.
+ ```
+
+2. Using console.log() print out the following quote by Mother Teresa:
+
+ ```sh
+ "Love is not patronizing and charity isn't about pity, it is about love. Charity and love are the same -- with charity you give love, so don't just give money but reach out your hand instead."
+ ```
+
+3. Check if typeof '10' is exactly equal to 10. If not make it exactly equal.
+4. Check if parseFloat('9.8') is equal to 10 if not make it exactly equal with 10.
+5. Check if 'on' is found in both python and jargon
+6. _I hope this course is not full of jargon_. Check if _jargon_ is in the sentence.
+7. Generate a random number between 0 and 100 inclusively.
+8. Generate a random number between 50 and 100 inclusively.
+9. Generate a random number between 0 and 255 inclusively.
+10. Access the 'JavaScript' string characters using a random number.
+11. Use console.log() and escape characters to print the following pattern.
+
+ ```js
+ 1 1 1 1 1
+ 2 1 2 4 8
+ 3 1 3 9 27
+ 4 1 4 16 64
+ 5 1 5 25 125
+ ```
+
+12. Use __substr__ to slice out the phrase __because because because__ from the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
+
+### Exercises: Level 3
+
+1. 'Love is the best thing in this world. Some found their love and some are still looking for their love.' Count the number of word __love__ in this sentence.
+2. Use __match()__ to count the number of all __because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
+3. Clean the following text and find the most frequent word (hint, use replace and regular expressions).
+
+ ```js
+ const sentence = '%I $am@% a %tea@cher%, &and& I lo%#ve %te@a@ching%;. The@re $is no@th@ing; &as& mo@re rewarding as educa@ting &and& @emp%o@weri@ng peo@ple. ;I found tea@ching m%o@re interesting tha@n any ot#her %jo@bs. %Do@es thi%s mo@tiv#ate yo@u to be a tea@cher!? %Th#is 30#Days&OfJavaScript &is al@so $the $resu@lt of &love& of tea&ching'
+ ```
+
+4. Calculate the total annual income of the person by extracting the numbers from the following text. 'He earns 5000 euro from salary per month, 10000 euro annual bonus, 15000 euro online courses per month.'
🎉 CONGRATULATIONS ! 🎉
-[<< Day 1](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/readMe.md) | [Day 3 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md)
+[<< Day 1](../readMe.md) | [Day 3 >>](../03_Day_Booleans_operators_date/03_booleans_operators_date.md)
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rename to 02_Day_Data_types/string_methods/ends_with.js
diff --git a/02_Day/string_methods/includes.js b/02_Day_Data_types/string_methods/includes.js
similarity index 100%
rename from 02_Day/string_methods/includes.js
rename to 02_Day_Data_types/string_methods/includes.js
diff --git a/02_Day/string_methods/index_of.js b/02_Day_Data_types/string_methods/index_of.js
similarity index 100%
rename from 02_Day/string_methods/index_of.js
rename to 02_Day_Data_types/string_methods/index_of.js
diff --git a/02_Day/string_methods/last_index_of.js b/02_Day_Data_types/string_methods/last_index_of.js
similarity index 100%
rename from 02_Day/string_methods/last_index_of.js
rename to 02_Day_Data_types/string_methods/last_index_of.js
diff --git a/02_Day/string_methods/length.js b/02_Day_Data_types/string_methods/length.js
similarity index 100%
rename from 02_Day/string_methods/length.js
rename to 02_Day_Data_types/string_methods/length.js
diff --git a/02_Day/string_methods/match.js b/02_Day_Data_types/string_methods/match.js
similarity index 84%
rename from 02_Day/string_methods/match.js
rename to 02_Day_Data_types/string_methods/match.js
index 6e28141..54e18a8 100644
--- a/02_Day/string_methods/match.js
+++ b/02_Day_Data_types/string_methods/match.js
@@ -15,8 +15,8 @@ console.log(string.match(pattern)) // ["love", "love", "love"]
// Let us extract numbers from text using regular expression. This is not regular expression section, no panic.
let txt = 'In 2019, I run 30 Days of Pyhton. Now, in 2020 I super exited to start this challenge'
-let regEx = /\d+/ // d with escape character means d not a normal d instead acts a digit
+let regEx = /\d/g // d with escape character means d not a normal d instead acts a digit
// + means one or more digit numbers,
// if there is g after that it means global, search everywhere.
-console.log(text.match(regEx)) // ["2", "0", "1", "9", "3", "0", "2", "0", "2", "0"]
-console.log(text.match(/\d+/g)) // ["2019", "30", "2020"]
+console.log(txt.match(regEx)) // ["2", "0", "1", "9", "3", "0", "2", "0", "2", "0"]
+console.log(txt.match(/\d+/g)) // ["2019", "30", "2020"]
diff --git a/02_Day/string_methods/repeat.js b/02_Day_Data_types/string_methods/repeat.js
similarity index 100%
rename from 02_Day/string_methods/repeat.js
rename to 02_Day_Data_types/string_methods/repeat.js
diff --git a/02_Day/string_methods/replace.js b/02_Day_Data_types/string_methods/replace.js
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rename from 02_Day/string_methods/replace.js
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rename from 02_Day/string_methods/substr.js
rename to 02_Day_Data_types/string_methods/substr.js
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rename from 02_Day/string_methods/substring.js
rename to 02_Day_Data_types/string_methods/substring.js
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similarity index 100%
rename from 02_Day/string_methods/to_lowercase.js
rename to 02_Day_Data_types/string_methods/to_lowercase.js
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similarity index 100%
rename from 02_Day/string_methods/to_uppercase.js
rename to 02_Day_Data_types/string_methods/to_uppercase.js
diff --git a/02_Day/string_methods/trim.js b/02_Day_Data_types/string_methods/trim.js
similarity index 100%
rename from 02_Day/string_methods/trim.js
rename to 02_Day_Data_types/string_methods/trim.js
diff --git a/03_Day/03_booleans_operators_date.md b/03_Day_Booleans_operators_date/03_booleans_operators_date.md
similarity index 77%
rename from 03_Day/03_booleans_operators_date.md
rename to 03_Day_Booleans_operators_date/03_booleans_operators_date.md
index 8102c39..399ec7d 100644
--- a/03_Day/03_booleans_operators_date.md
+++ b/03_Day_Booleans_operators_date/03_booleans_operators_date.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Booleans, Operators, Date
@@ -13,11 +13,11 @@
-[<< Day 2](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/02_Day/02_day_data_types.md) | [Day 4 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/04_Day/04_day_conditionals.md)
+[<< Day 2](../02_Day_Data_types/02_day_data_types.md) | [Day 4 >>](../04_Day_Conditionals/04_day_conditionals.md)
-- [📔 Day 3](#%f0%9f%93%94-day-3)
+- [📔 Day 3](#-day-3)
- [Booleans](#booleans)
- [Truthy values](#truthy-values)
- [Falsy values](#falsy-values)
@@ -46,14 +46,10 @@
- [Getting minutes](#getting-minutes)
- [Getting seconds](#getting-seconds)
- [Getting time](#getting-time)
-- [💻 Day 3: Exercises](#%f0%9f%92%bb-day-3-exercises)
- - [1. Exercises: Data types Part](#1-exercises-data-types-part)
- - [2. Exercises: Arithmetic Operators Part](#2-exercises-arithmetic-operators-part)
- - [3. Exercises: Booleans Part](#3-exercises-booleans-part)
- - [4. Exercises: Comparison Operators](#4-exercises-comparison-operators)
- - [5. Exercises: Logical Operators](#5-exercises-logical-operators)
- - [6 Ternary Operator](#6-ternary-operator)
- - [7. Exercises: Date time Object](#7-exercises-date-time-object)
+ - [💻 Day 3: Exercises](#-day-3-exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 3
@@ -68,8 +64,8 @@ let isLightOn = true
let isRaining = false
let isHungry = false
let isMarried = true
-let truValue = 4 > 3 // true
-let falseValue = 3 < 4 // false
+let truValue = 4 > 3 // true
+let falseValue = 4 < 3 // false
```
We agreed that boolean values are either true or false.
@@ -90,11 +86,11 @@ We agreed that boolean values are either true or false.
- the boolean false
- '', "", ``, empty string
-It is good to remember those truthy values and falsy values. In later section, we will use them with conditions to make decision.
+It is good to remember those truthy values and falsy values. In later section, we will use them with conditions to make decisions.
## Undefined
-If we declare a variable and if we do not assign a value, the value will be undefined. In addition to this, if a function is not returning the value will be undefined.
+If we declare a variable and if we do not assign a value, the value will be undefined. In addition to this, if a function is not returning the value, it will be undefined.
```js
let firstName
@@ -129,10 +125,10 @@ Arithmetic operators are mathematical operators.
- Addition(+): a + b
- Subtraction(-): a - b
-- Multiplication(_): a _ b
+- Multiplication(*): a * b
- Division(/): a / b
-- Modulus(%):a % b
-- Exponential(**):a ** b
+- Modulus(%): a % b
+- Exponential(**): a ** b
```js
let numOne = 4
@@ -146,23 +142,29 @@ let powerOf = numOne ** numTwo
console.log(sum, diff, mult, div, remainder, powerOf) // 7,1,12,1.33,1, 64
-let PI = 3.14
-let radius = 100 // length in meter
+```
-const gravity = 9.81 // in m/s2
-let mass = 72 // in Kilogram
-const boilingPoint = 100 // temperature in oC, boiling point of water
-const bodyTemp = 37 // body temperature in oC
+```js
+const PI = 3.14
+let radius = 100 // length in meter
//Let us calculate area of a circle
const areaOfCircle = PI * radius * radius
console.log(areaOfCircle) // 314 m
+
+const gravity = 9.81 // in m/s2
+let mass = 72 // in Kilogram
+
// Let us calculate weight of an object
const weight = mass * gravity
console.log(weight) // 706.32 N(Newton)
-//Concatenating string with numbers using string interpolation
+const boilingPoint = 100 // temperature in oC, boiling point of water
+const bodyTemp = 37 // body temperature in oC
+
+
+// Concatenating string with numbers using string interpolation
/*
The boiling point of water is 100 oC.
Human body temperature is 37 oC.
@@ -191,14 +193,13 @@ console.log(3 != 2) // true, because 3 is not equal to 2
console.log(3 == '3') // true, compare only value
console.log(3 === '3') // false, compare both value and data type
console.log(3 !== '3') // true, compare both value and data type
-console.log(3 !== '3') // true, compare both value and data type
console.log(3 != 3) // false, compare only value
console.log(3 !== 3) // false, compare both value and data type
console.log(0 == false) // true, equivalent
+console.log(0 === false) // false, not exactly the same
console.log(0 == '') // true, equivalent
console.log(0 == ' ') // true, equivalent
console.log(0 === '') // false, not exactly the same
-console.log(0 === false) // false, not exactly the same
console.log(1 == true) // true, equivalent
console.log(1 === true) // false, not exactly the same
console.log(undefined == null) // true
@@ -210,13 +211,13 @@ console.log(typeof NaN) // number
console.log('mango'.length == 'avocado'.length) // false
console.log('mango'.length != 'avocado'.length) // true
console.log('mango'.length < 'avocado'.length) // true
-console.log('milk'.length != 'meat'.length) // false
console.log('milk'.length == 'meat'.length) // true
+console.log('milk'.length != 'meat'.length) // false
console.log('tomato'.length == 'potato'.length) // true
console.log('python'.length > 'dragon'.length) // false
```
-Try to understand the above comparisons with some logic. Remember without any logic might be difficult.
+Try to understand the above comparisons with some logic. Remembering without any logic might be difficult.
JavaScript is some how a wired kind of programming language. JavaScript code run and give you a result but unless you are good at it may not be the desired result.
As rule of thumb, if a value is not true with == it will not be equal with ===. Using === is safer than using ==. The following [link](https://dorey.github.io/JavaScript-Equality-Table/) has an exhaustive list of comparison of data types.
@@ -225,30 +226,30 @@ As rule of thumb, if a value is not true with == it will not be equal with ===.
The following symbols are the common logical operators:
&&(ampersand) , ||(pipe) and !(negation).
-&& gets true only if the two operands are true.
-|| gets true either of the operand is true.
-! negates true to false, false to true.
+The && operator gets true only if the two operands are true.
+The || operator gets true either of the operand is true.
+The ! operator negates true to false and false to true.
```js
-//&& ampersand operator example
+// && ampersand operator example
-const check = 4 > 3 && 10 > 5 // true and true -> true
-const check = 4 > 3 && 10 < 5 // true and false -> false
-const check = 4 < 3 && 10 < 5 // false and false -> false
+const check = 4 > 3 && 10 > 5 // true && true -> true
+const check = 4 > 3 && 10 < 5 // true && false -> false
+const check = 4 < 3 && 10 < 5 // false && false -> false
-//|| pipe or operator, example
+// || pipe or operator, example
-const check = 4 > 3 || 10 > 5 // true and true -> true
-const check = 4 > 3 || 10 < 5 // true and false -> true
-const check = 4 < 3 || 10 < 5 // false and false -> false
+const check = 4 > 3 || 10 > 5 // true || true -> true
+const check = 4 > 3 || 10 < 5 // true || false -> true
+const check = 4 < 3 || 10 < 5 // false || false -> false
//! Negation examples
-let check = 4 > 3 // true
-let check = !(4 > 3) // false
+let check = 4 > 3 // true
+let check = !(4 > 3) // false
let isLightOn = true
-let isLightOff = !isLightOn // false
-let isMarried = !false // true
+let isLightOff = !isLightOn // false
+let isMarried = !false // true
```
### Increment Operator
@@ -259,16 +260,16 @@ In JavaScrip we use the increment operator to increase a value stored in a varia
```js
let count = 0
-console.log(++count) // 1
-console.log(count) // 1
+console.log(++count) // 1
+console.log(count) // 1
```
1. Post-increment
```js
let count = 0
-console.log(count++) // 0
-console.log(count) // 1
+console.log(count++) // 0
+console.log(count) // 1
```
We use most of the time post-increment. At leas you should remember how to use post-increment operator.
@@ -350,7 +351,7 @@ alert(message)
alert('Welcome to 30DaysOfJavaScript')
```
-Do not use too much alert because it is destructing and annoying, use it just for to test.
+Do not use too much alert because it is destructing and annoying, use it just to test.
### Window prompt() method
@@ -368,8 +369,8 @@ console.log(number)
### Window confirm() method
The confirm() method displays a dialog box with a specified message, along with an OK and a Cancel button.
-A confirm box is often used to ask permission from a user to do something. Window confirm() takes an string as an argument.
-Clicking the OK yields true value, clicking the Cancel button yields false value.
+A confirm box is often used to ask permission from a user to execute something. Window confirm() takes a string as an argument.
+Clicking the OK yields true value, whereas clicking the Cancel button yields false value.
```js
const agree = confirm('Are you sure you like to delete? ')
@@ -398,7 +399,7 @@ We have created a time object and we can access any date time information from t
### Getting full year
-Let's extract or get the full from a time object.
+Let's extract or get the full year from a time object.
```js
const now = new Date()
@@ -420,7 +421,7 @@ Let's extract or get the date of the month from a time object.
```js
const now = new Date()
-console.log(now.getDate()) // 4, because the day of the month is 4th, day(0-31)
+console.log(now.getDate()) // 4, because the day of the month is 4th, day(1-31)
```
### Getting day
@@ -429,7 +430,8 @@ Let's extract or get the day of the week from a time object.
```js
const now = new Date()
-console.log(now.getDay()) // 6, because the day is Saturday which is the 5th day,
+console.log(now.getDay()) // 6, because the day is Saturday which is the 7th day
+// Sunday is 0, Monday is 1 and Saturday is 6
// Getting the weekday as a number (0-6)
```
@@ -476,6 +478,7 @@ console.log(now.getTime()) // 1578092201341, this is the number of seconds passe
```js
const allSeconds = Date.now() //
console.log(allSeconds) // 1578092201341, this is the number of seconds passed from January 1, 1970 to January 4, 2020 00:56:41
+
const timeInSeconds = new Date().getTime()
console.log(allSeconds == timeInSeconds) // true
```
@@ -490,21 +493,60 @@ const month = now.getMonth() + 1 // return month(0 - 11)
const date = now.getDate() // return date (1 - 31)
const hours = now.getHours() // return number (0 - 23)
const minutes = now.getMinutes() // return number (0 -59)
+
console.log(`${date}/${month}/${year} ${hours}:${minutes}`) // 4/1/2020 0:56
```
-🌕 You have boundless energy. You have just completed day 3 challenges and you are three steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
+🌕 You have boundless energy. You have just completed day 3 challenges and you are three steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
+
+## 💻 Day 3: Exercises
+
+### Exercises: Level 1
-# 💻 Day 3: Exercises
+1. Declare firstName, lastName, country, city, age, isMarried, year variable and assign value to it and use the typeof operator to check different data types.
+2. Check if type of '10' is equal to 10
+3. Check if parseInt('9.8') is equal to 10
+4. Boolean value is either true or false.
+ 1. Write three JavaScript statement which provide truthy value.
+ 2. Write three JavaScript statement which provide falsy value.
-## 1. Exercises: Data types Part
+5. Figure out the result of the following comparison expression first without using console.log(). After you decide the result confirm it using console.log()
+ 1. 4 > 3
+ 2. 4 >= 3
+ 3. 4 < 3
+ 4. 4 <= 3
+ 5. 4 == 4
+ 6. 4 === 4
+ 7. 4 != 4
+ 8. 4 !== 4
+ 9. 4 != '4'
+ 10. 4 == '4'
+ 11. 4 === '4'
+ 12. Find the length of python and jargon and make a falsy comparison statement.
+
+6. Figure out the result of the following expressions first without using console.log(). After you decide the result confirm it by using console.log()
+ 1. 4 > 3 && 10 < 12
+ 2. 4 > 3 && 10 > 12
+ 3. 4 > 3 || 10 < 12
+ 4. 4 > 3 || 10 > 12
+ 5. !(4 > 3)
+ 6. !(4 < 3)
+ 7. !(false)
+ 8. !(4 > 3 && 10 < 12)
+ 9. !(4 > 3 && 10 > 12)
+ 10. !(4 === '4')
+ 11. There is no 'on' in both dragon and python
-1. Declare firstName, lastName, country, city, age, isMarried, year variable and assign value to it
-1. The JavaScript typeof operator uses to check different data types. Check the data type of each variables from question number 1.
-1. Check if type of '10' is equal to 10
-1. Check if parseInt('9.8') is equal to 10
+7. Use the Date object to do the following activities
+ 1. What is the year today?
+ 2. What is the month today as a number?
+ 3. What is the date today?
+ 4. What is the day today as a number?
+ 5. What is the hours now?
+ 6. What is the minutes now?
+ 7. Find out the numbers of seconds elapsed from January 1, 1970 to now.
-## 2. Exercises: Arithmetic Operators Part
+### Exercises: Level 2
1. Write a script that prompt the user to enter base and height of the triangle and calculate an area of a triangle (area = 0.5 x b x h).
@@ -531,75 +573,25 @@ console.log(`${date}/${month}/${year} ${hours}:${minutes}`) // 4/1/2020 0:56
1. Calculate the value of y (y = x^2 + 6x + 9). Try to use different x values and figure out at what x value y is 0.
1. Writ a script that prompt a user to enters hours and rate per hour. Calculate pay of the person?
- ```sh
- Enter hours: 40
- Enter rate per hour: 28
- Your weekly earning is 1120
- ```
-
-1. Write a script that prompt the user to enter number of years. Calculate the number of seconds a person can live. Assume some one lives just hundred years
-
- ```sh
- Enter number of yours you live: 100
- You lived 3153600000 seconds.
- ```
-
-## 3. Exercises: Booleans Part
-
-Boolean value is either true or false.
-
-1. Write three JavaScript statement which provide truthy value.
-1. Write three JavaScript statement which provide falsy value.
-
-## 4. Exercises: Comparison Operators
-
-Figure out the result of the following comparison expression first without using console.log(). After you decide the result confirm it using console.log()
-
-1. 4 > 3
-1. 4 >= 3
-1. 4 < 3
-1. 4 <= 3
-1. 4 == 4
-1. 4 === 4
-1. 4 != 4
-1. 4 !== 4
-1. 4 != '4'
-1. 4 == '4'
-1. 4 === '4'
- Find the length of python and jargon and make a falsy comparison statement.
-
-## 5. Exercises: Logical Operators
-
-1. Figure out the result of the following expressions first without using console.log(). After you decide the result confirm it by using console.log()
- 1. 4 > 3 && 10 < 12
- 2. 4 > 3 && 10 > 12
- 3. 4 > 3 || 10 < 12
- 4. 4 > 3 || 10 > 12
- 5. !(4 > 3)
- 6. !(4 < 3)
- 7. !(false)
- 8. !(4 > 3 && 10 < 12)
- 9. !(4 > 3 && 10 > 12)
- 10. !(4 === '4')
-2. There is no 'on' in both dragon and python
-
-## 6 Ternary Operator
+ ```sh
+ Enter hours: 40
+ Enter rate per hour: 28
+ Your weekly earning is 1120
+ ```
1. If the length of your name is greater than 7 say, your name is long else say your name is short.
1. Compare your first name length and your family name length and you should get this output.
-```js
-let firstName = 'Asabeneh'
-let lastName = 'Yetayeh'
-```
+ ```js
+ let firstName = 'Asabeneh'
+ let lastName = 'Yetayeh'
+ ```
-```sh
-//Output
-Your first name, Asabeneh is longer than your family name, Yetayeh
-```
+ ```sh
+ Your first name, Asabeneh is longer than your family name, Yetayeh
+ ```
1. Declare two variables _myAge_ and _yourAge_ and assign them initial values and myAge and yourAge.
- Output:
```js
let myAge = 250
@@ -607,33 +599,35 @@ Your first name, Asabeneh is longer than your family name, Yetayeh
```
```sh
- //output
I am 225 years older than you.
```
1. Using prompt get the year the user was born and if the user is 18 or above allow the user to drive if not tell the user to wait a certain amount of years.
-```sh
-// if the age is 25
-You are 25. You are old enough to drive
-// if the age is under 18
- You are 15. You will be allowed to drive after 3 years.
-```
+ ```sh
+
+ Enter birth year: 1995
+ You are 25. You are old enough to drive
+
+ Enter birth year: 2005
+ You are 15. You will be allowed to drive after 3 years.
+ ```
+
+1. Write a script that prompt the user to enter number of years. Calculate the number of seconds a person can live. Assume some one lives just hundred years
+
+ ```sh
+ Enter number of yours you live: 100
+ You lived 3153600000 seconds.
+ ```
-## 7. Exercises: Date time Object
+1. Create a human readable time format using the Date time object
+ 1. YYYY-MM-DD HH:mm
+ 2. DD-MM-YYYY HH:mm
+ 3. DD/MM/YYYY HH:mm
-1. What is the year today?
-1. What is the month today as a number?
-1. What is the date today?
-1. What is the day today as a number?
-1. What is the hours now?
-1. What is the minutes now?
-1. Find out the numbers of seconds elapsed from January 1, 1970 to now.
-1. Create a human readable time format
- 1. YYY-MM-DD HH:mm:ss
- 2. DD-MM-YYYY HH:mm:ss
- 3. DD/MM/YYY HH:mm:ss
+### Exercises: Level 3
-🎉 CONGRATULATIONS ! 🎉
+1. Create a human readable time format using the Date time object. The hour and the minute should be all the time two digits(7 hours should be 07 and 5 minutes should be 05 )
+ 1. YYY-MM-DD HH:mm eg. 20120-01-02 07:05
-[<< Day 2](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/02_Day/02_day_data_types.md) | [Day 4 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/04_Day/04_day_conditionals.md)
+[<< Day 2](../02_Day_Data_types/02_day_data_types.md) | [Day 4 >>](../04_Day_Conditionals/04_day_conditionals.md)
diff --git a/03_Day/03_day_starter/index.html b/03_Day_Booleans_operators_date/03_day_starter/index.html
similarity index 100%
rename from 03_Day/03_day_starter/index.html
rename to 03_Day_Booleans_operators_date/03_day_starter/index.html
diff --git a/03_Day/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
similarity index 100%
rename from 03_Day/03_day_starter/scripts/main.js
rename to 03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
diff --git a/04_Day/04_day_conditionals.md b/04_Day_Conditionals/04_day_conditionals.md
similarity index 80%
rename from 04_Day/04_day_conditionals.md
rename to 04_Day_Conditionals/04_day_conditionals.md
index 73f9a0a..f41cb10 100644
--- a/04_Day/04_day_conditionals.md
+++ b/04_Day_Conditionals/04_day_conditionals.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Conditionals
@@ -13,24 +13,27 @@
-[<< Day 3](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md) | [Day 5 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/05_Day/05_day_arrays.md)
+[<< Day 3](../03_Day_Booleans_operators_date/03_booleans_operators_date.md) | [Day 5 >>](../05_Day_Arrays/05_day_arrays.md)
-- [📔 Day 4](#%f0%9f%93%94-day-4)
+- [📔 Day 4](#-day-4)
- [Conditionals](#conditionals)
- [if](#if)
- [if else](#if-else)
- [if else if else](#if-else-if-else)
- [Switch](#switch)
- [Ternary Operators](#ternary-operators)
-- [💻 Exercise : Conditionals](#%f0%9f%92%bb-exercise--conditionals)
+ - [💻 Exercises](#-exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 4
## Conditionals
-Conditional statements are used to decision based on different conditions.
+Conditional statements are used to make decisions based on different conditions.
By default , statements in JavaScript script executed sequentially from top to bottom. If the processing logic require so, the sequential flow of execution can be altered in two ways:
- Conditional execution: a block of one or more statements will be executed if a certain expression is true
@@ -46,7 +49,7 @@ Conditions can be implementing using the following ways:
### if
-In JavaScript and other programming languages the key word _if_ use to check if a condition is true and to execute the block code. To create an if condition, we need _if_ keyword, condition inside a parenthesis and block of code inside a curly bracket({}).
+In JavaScript and other programming languages the key word _if_ is used to check if a condition is true and to execute the block code. To create an if condition, we need _if_ keyword, condition inside a parenthesis and block of code inside a curly bracket({}).
```js
// syntax
@@ -65,6 +68,8 @@ if (num > 0) {
// 3 is a positive number
```
+As you can see in the above condition, 3 is greater than 0 and it is a positive number. The condition was true and the block code was executed. However, if the condition is false, we do not see a result.
+
```js
let isRaining = true
if (isRaining) {
@@ -72,7 +77,7 @@ if (isRaining) {
}
```
-As you can see in the above condition, 3 is greater than 0 and it is a positive number. The condition was true and the block code was executed. However, if the condition is false, we do not see a result. The same goes for the second condition, if isRaining is false the if block will not be executed and we do not see an output. In order to see the result of the falsy condition, we should have another block, which is going to be _else_.
+ The same goes for the second condition, if isRaining is false the if block will not be executed and we do not see an output. In order to see the result of the falsy condition, we should have another block, which is going to be _else_.
### if else
@@ -127,7 +132,7 @@ The above condition is false, therefore the else block was executed. How about i
### if else if else
-On our daily life, we make decision on daily basis. We make decision not by checking one or two conditions instead we make decisions based on multiple conditions. As similar to our daily life, programming is also full conditions. We use *else if* when we have multiple conditions.
+On our daily life, we make decision on daily basis. We make decision not by checking one or two conditions instead we make decisions based on multiple conditions. As similar to our daily life, programming is also full of conditions. We use *else if* when we have multiple conditions.
```js
// syntax
@@ -238,6 +243,25 @@ switch (day) {
```
+// Examples to use conditions in the cases
+
+```js
+let num = prompt('Enter number');
+switch (true) {
+ case num > 0:
+ console.log('Number is positive');
+ break;
+ case num == 0:
+ console.log('Numbers is zero');
+ break;
+ case num < 0:
+ console.log('Number is negative');
+ break;
+ default:
+ console.log('Entered value was not a number');
+}
+```
+
### Ternary Operators
Another way to write conditionals is using ternary operators. We have covered this in other sections but we should also mention it here.
@@ -251,7 +275,9 @@ isRaining
🌕 You are extraordinary and you have a remarkable potential. You have just completed day 4 challenges and you are four steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
-# 💻 Exercise : Conditionals
+## 💻 Exercises
+
+### Exercises: Level 1
1. Get user input using prompt(“Enter your age:”). If user is 18 or older , give feedback:You are old enough to drive but if not 18 give feedback to wait for the years he supposed to wait for.
@@ -284,19 +310,6 @@ isRaining
4 is greater than 3
```
-1. Write a code which give grade students according to theirs scores:
- - 80-100, A
- - 70-89, B
- - 60-69, C
- - 50-59, D
- - 0 -49, F
-1. Check if the season is Autumn, Winter, Spring or Summer.
- If the user input is:
- - September, October or November, the season is Autumn.
- - December, January or February, the season is Winter.
- - March, April or May, the season is Spring
- - June, July or August, the season is Summer
-
1. Even numbers are divisible by 2 and the remainder is zero. How do you check if a number is even or not using JavaScript?
```sh
@@ -307,39 +320,54 @@ isRaining
9 is is an odd number.
```
+### Exercises: Level 2
+
+1. Write a code which can give grade to students according to theirs scores:
+ - 80-100, A
+ - 70-89, B
+ - 60-69, C
+ - 50-59, D
+ - 0-49, F
+1. Check if the season is Autumn, Winter, Spring or Summer.
+ If the user input is:
+ - September, October or November, the season is Autumn.
+ - December, January or February, the season is Winter.
+ - March, April or May, the season is Spring
+ - June, July or August, the season is Summer
1. Check if a day is weekend day or a working day. Your script will take day as an input.
```sh
- What is the day is today? Saturday
- Saturday is a weekend day.
+ What is the day today? Saturday
+ Saturday is a weekend.
What is the day today? saturDaY
- Saturday is a weekend day.
+ Saturday is a weekend.
What is the day today? Friday
- Friday is a work day.
+ Friday is a working day.
What is the day today? FrIDAy
- Friday is a work day.
+ Friday is a working day.
```
-1. Write a program which tells the number days in a month.
+### Exercises: Level 3
+
+1. Write a program which tells the number of days in a month.
```sh
- Enter month: January
+ Enter a month: January
January has 31 days.
- Enter month: JANUARY
+ Enter a month: JANUARY
January has 31 day
- Enter month: February
+ Enter a month: February
February has 28 days.
- Enter month: FEbruary
+ Enter a month: FEbruary
February has 28 days.
```
-
🎉 CONGRATULATIONS ! 🎉
-[<< Day 3](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/03_Day/03_booleans_operators_date.md) | [Day 5 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/05_Day/05_day_arrays.md)
+[<< Day 3](../03_Day_Booleans_operators_date/03_booleans_operators_date.md) | [Day 5 >>](../05_Day_Arrays/05_day_arrays.md)
diff --git a/04_Day/04_day_starter/index.html b/04_Day_Conditionals/04_day_starter/index.html
similarity index 100%
rename from 04_Day/04_day_starter/index.html
rename to 04_Day_Conditionals/04_day_starter/index.html
diff --git a/04_Day/04_day_starter/scripts/main.js b/04_Day_Conditionals/04_day_starter/scripts/main.js
similarity index 100%
rename from 04_Day/04_day_starter/scripts/main.js
rename to 04_Day_Conditionals/04_day_starter/scripts/main.js
diff --git a/05_Day/05_day_arrays.md b/05_Day_Arrays/05_day_arrays.md
similarity index 86%
rename from 05_Day/05_day_arrays.md
rename to 05_Day_Arrays/05_day_arrays.md
index 1fe70ed..3374c12 100644
--- a/05_Day/05_day_arrays.md
+++ b/05_Day_Arrays/05_day_arrays.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Arrays
@@ -13,11 +13,11 @@
-[<< Day 4](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/04_Day/04_day_conditionals.md) | [Day 6 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/06_Day/06_day_loops.md)
+[<< Day 4](../04_Day_Conditionals/04_day_Conditionals.md) | [Day 6 >>](../06_Day_Loops/06_day_loops.md)
-- [📔 Day 5](#%f0%9f%93%94-day-5)
+- [📔 Day 5](#-day-5)
- [Arrays](#arrays)
- [How to create an empty array](#how-to-create-an-empty-array)
- [How to create an array with values](#how-to-create-an-array-with-values)
@@ -43,20 +43,23 @@
- [Reversing array order](#reversing-array-order)
- [Sorting elements in array](#sorting-elements-in-array)
- [Array of arrays](#array-of-arrays)
- - [💻 Exercise](#%f0%9f%92%bb-exercise)
+ - [💻 Exercise](#-exercise)
+ - [Exercise: Level 1](#exercise-level-1)
+ - [Exercise: Level 2](#exercise-level-2)
+ - [Exercise: Level 3](#exercise-level-3)
# 📔 Day 5
## Arrays
-In contrast to variables, an array can store _multiple values_. Each value in an array has an _index_, and each index has _a reference in a memory address_. Each value can be accessed by using their _indexes_. The index of an array starts from _zero_, and the last element is less by one from the length of the array.
+In contrast to variables, an array can store _multiple values_. Each value in an array has an _index_, and each index has _a reference in a memory address_. Each value can be accessed by using their _indexes_. The index of an array starts from _zero_, and the index of the last element is less by one from the length of the array.
An array is a collection of different data types which are ordered and changeable(modifiable). An array allows storing duplicate elements and different data types. An array can be empty, or it may have different data type values.
### How to create an empty array
-In JavaScript, we can create an array in different ways. Let us different ways to create an array.
-It is very common to use *const* instead of *let* to declare an array variable. If you ar using const it means you do not use that name again.
+In JavaScript, we can create an array in different ways. Let us see different ways to create an array.
+It is very common to use *const* instead of *let* to declare an array variable. If you ar using const it means you do not use that variable name again.
- Using Array constructor
@@ -163,7 +166,7 @@ console.log(words)
### Accessing array items using index
-We access each element in an array using their index. An array index starts from 0. The picture below clearly shows the starting of the index.
+We access each element in an array using their index. An array index starts from 0. The picture below clearly shows the index of each element in the array.
@@ -328,7 +331,7 @@ const eight0values = Array(8).fill(0) // it creates eight element values filled
console.log(eight0values) // [0, 0, 0, 0, 0, 0, 0, 0]
const four4values = Array(4).fill(4) // it creates 4 element values filled with '4'
-console.log(four4values) // [4, 4, 4, 4, 4, 4, 4, 4]
+console.log(four4values) // [4, 4, 4, 4]
```
#### Concatenating array using concat
@@ -471,7 +474,7 @@ console.log(names.toString()) // Asabeneh,Mathias,Elias,Brook
#### Joining array elements
-join: It used to join the elements of the array, the argument passed in the join method will be joined in the array and return as a string. By default, it joins with a comma, but we can pass different string parameter which can be joined between the items.
+join: It is used to join the elements of the array, the argument we passed in the join method will be joined in the array and return as a string. By default, it joins with a comma, but we can pass different string parameter which can be joined between the items.
```js
const numbers = [1, 2, 3, 4, 5]
@@ -529,8 +532,8 @@ Splice: It takes three parameters:Starting position, number of times to be remov
```
```js
- const numbers = [1, 2, 3, 4, 5];
- console.log(numbers.splice(3, 3, 6, 7, 8)) // -> [1, 2, 3, 6, 7, 8] //it removes two item and replace three items
+ const numbers = [1, 2, 3, 4, 5, 6];
+ console.log(numbers.splice(3, 3, 7, 8, 9)) // -> [1, 2, 3, 7, 8, 9] //it removes three item and replace three items
```
#### Adding item to an array using push
@@ -615,7 +618,7 @@ console.log(numbers) // [1, 2, 3, 4, 5]
#### Sorting elements in array
-sort: arrange array elements in ascending order. Sort takes a call back function, we will see how we use sort with call back function in the coming sections.
+sort: arrange array elements in ascending order. Sort takes a call back function, we will see how we use sort with a call back function in the coming sections.
```js
const webTechs = [
@@ -659,6 +662,8 @@ console.log(arrayOfArray[0]) // [1, 2, 3]
## 💻 Exercise
+### Exercise: Level 1
+
```js
const countries = [
'Albania',
@@ -686,30 +691,33 @@ const webTechs = [
```
1. Declare an _empty_ array;
-1. Declare an array with more than 5 number of elements
-1. Find the length of your array
-1. Get the first item, the middle item and the last item of the array
-1. Declare an array called _mixedDataTypes_,put different data types in your array and find length of the array. You are should size be greater than 5
-1. Declare an array variable name itCompanies and assign initial values Facebook, Google, Microsoft, Apple, IBM, Oracle and Amazon
-1. Print the array using _console.log()_
-1. Print the number of companies in the array
-1. Print the first company, middle and last company
-1. Print out each company
-1. Change each company name to uppercase one by one and print them out
-1. Print the array like as a sentence: Facebook, Google, Microsoft, Apple, IBM,Oracle and Amazon are big IT companies.
-1. Check if a certain company exists in the itCompanies array. If it exist return the company else return a company is _not found_
-1. Filter out companies which have more than one 'o' without the filter method
-1. Sort the array using _sort()_ method
-1. Reverse the array using _reverse()_ method
-1. Slice out the first 3 companies from the array
-1. Slice out the last 3 companies from the array
-1. Slice out the middle IT company or companies from the array
-1. Remove the first IT company from the array
-1. Remove the middle IT company or companies from the array
-1. Remove the last IT company from the array
-1. Remove all IT companies
-1. Create a separate countries.js file and store the countries array in to this file, create a separate file web_techs.js ans store the webTechs array in to this file. Access both file in main.js file
-1. First remove all the functions and change the string to array and count the number of words in the array
+2. Declare an array with more than 5 number of elements
+3. Find the length of your array
+4. Get the first item, the middle item and the last item of the array
+5. Declare an array called _mixedDataTypes_, put different data types in the array and find the length of the array. The array size should be greater than 5
+6. Declare an array variable name itCompanies and assign initial values Facebook, Google, Microsoft, Apple, IBM, Oracle and Amazon
+7. Print the array using _console.log()_
+8. Print the number of companies in the array
+9. Print the first company, middle and last company
+10. Print out each company
+11. Change each company name to uppercase one by one and print them out
+12. Print the array like as a sentence: Facebook, Google, Microsoft, Apple, IBM,Oracle and Amazon are big IT companies.
+13. Check if a certain company exists in the itCompanies array. If it exist return the company else return a company is _not found_
+14. Filter out companies which have more than one 'o' without the filter method
+15. Sort the array using _sort()_ method
+16. Reverse the array using _reverse()_ method
+17. Slice out the first 3 companies from the array
+18. Slice out the last 3 companies from the array
+19. Slice out the middle IT company or companies from the array
+20. Remove the first IT company from the array
+21. Remove the middle IT company or companies from the array
+22. Remove the last IT company from the array
+23. Remove all IT companies
+
+### Exercise: Level 2
+
+1. Create a separate countries.js file and store the countries array in to this file, create a separate file web_techs.js and store the webTechs array in to this file. Access both file in main.js file
+1. First remove all the punctuations and change the string to array and count the number of words in the array
```js
let text =
@@ -720,6 +728,7 @@ const webTechs = [
```sh
["I", "love", "teaching", "and", "empowering", "people", "I", "teach", "HTML", "CSS", "JS", "React", "Python"]
+
13
```
@@ -729,10 +738,10 @@ const webTechs = [
const shoppingCart = ['Milk', 'Coffee', 'Tea', 'Honey']
```
- - add 'Meat' in the beginning of your shopping cart if if it has not be already added
- - add sugar at the end of you shopping cart if it has not been already added
- - Remove 'Honey' if you are allergic to honey
- - modify tea to 'Green Tea'
+ - add 'Meat' in the beginning of your shopping cart if it has not been already added
+ - add Sugar at the end of you shopping cart if it has not been already added
+ - remove 'Honey' if you are allergic to honey
+ - modify Tea to 'Green Tea'
1. In countries array check if 'Ethiopia' exists in the array if it exists print 'ETHIOPIA'. If it does not exist add to the countries list.
1. In the webTechs array check if Sass exists in the array and if it exists print 'Sass is a CSS preprocess'. If it does not exist add Sass to the array and print the array.
1. Concatenate the following two variables and store it in a fullStack variable.
@@ -748,6 +757,8 @@ const webTechs = [
["HTML", "CSS", "JS", "React", "Redux", "Node", "Express", "MongoDB"]
```
+### Exercise: Level 3
+
1. The following is an array of 10 students ages:
```js
@@ -755,16 +766,14 @@ const webTechs = [
```
- Sort the array and find the min and max age
- - Find the min age and the max age
- Find the median age(one middle item or two middle items divided by two)
- Find the average age(all items divided by number of items)
- Find the range of the ages(max minus min)
- Compare the value of (min - average) and (max - average), use *abs()* method
1.Slice the first ten countries from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js)
1. Find the middle country(ies) in the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js)
-1. Find the middle country(ies) in the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js)
-1. Divide the countries array into two equal arrays if it is even. If countries array is not even , one more country for the first half.
+2. Divide the countries array into two equal arrays if it is even. If countries array is not even , one more country for the first half.
🎉 CONGRATULATIONS ! 🎉
-[<< Day 4](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/04_Day/04_day_conditionals.md) | [Day 6 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/06_Day/06_day_loops.md)
+[<< Day 4](../04_Day_Conditionals/04_day_Conditionals.md) | [Day 6 >>](../06_Day_Loops/06_day_loops.md)
diff --git a/05_Day/05_day_starter/data/countries.js b/05_Day_Arrays/05_day_starter/data/countries.js
similarity index 100%
rename from 05_Day/05_day_starter/data/countries.js
rename to 05_Day_Arrays/05_day_starter/data/countries.js
diff --git a/05_Day/05_day_starter/index.html b/05_Day_Arrays/05_day_starter/index.html
similarity index 100%
rename from 05_Day/05_day_starter/index.html
rename to 05_Day_Arrays/05_day_starter/index.html
diff --git a/05_Day/05_day_starter/scripts/main.js b/05_Day_Arrays/05_day_starter/scripts/main.js
similarity index 100%
rename from 05_Day/05_day_starter/scripts/main.js
rename to 05_Day_Arrays/05_day_starter/scripts/main.js
diff --git a/06_Day/06_day_loops.md b/06_Day_Loops/06_day_loops.md
similarity index 60%
rename from 06_Day/06_day_loops.md
rename to 06_Day_Loops/06_day_loops.md
index 0a39f1d..f0809fb 100644
--- a/06_Day/06_day_loops.md
+++ b/06_Day_Loops/06_day_loops.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Loops
@@ -13,11 +13,11 @@
-[<< Day 5](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/05_Day/05_day_arrays.md) | [Day 7 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/07_Day/07_day_functions.md)
+[<< Day 5](../05_Day_Arrays/05_day_arrays.md) | [Day 7 >>](../07_Day_Functions/07_day_functions.md)
-- [📔 Day 6](#%f0%9f%93%94-day-6)
+- [📔 Day 6](#-day-6)
- [Loops](#loops)
- [for Loop](#for-loop)
- [while loop](#while-loop)
@@ -25,20 +25,23 @@
- [for of loop](#for-of-loop)
- [break](#break)
- [continue](#continue)
- - [💻 Exercises:Day 6](#%f0%9f%92%bb-exercisesday-6)
+ - [💻 Exercises:Day 6](#-exercisesday-6)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 6
## Loops
-Most of the activities we do in life are full of repetitions. Imagine if I ask you to print out from 0 to 100 using console.log(). To implement this simple task it may take you 2 to 5 minutes, such kind of tedious and repetitive task can be carried out using loop.
+Most of the activities we do in life are full of repetitions. Imagine if I ask you to print out from 0 to 100 using console.log(). To implement this simple task it may take you 2 to 5 minutes, such kind of tedious and repetitive task can be carried out using loop. If you prefer watching the videos, you can checkout the [video tutorials](https://www.youtube.com/channel/UCM4xOopkYiPwJqyKsSqL9mw)
-In programming languages to carry out repetitive task we use different kinds of loop. The following examples are the commonly used loops.
+In programming languages to carry out repetitive task we use different kinds of loops. The following examples are the commonly used loops in JavaScript and other programming languages.
### for Loop
```js
-//For loop structure
+// For loop structure
for(initialization, condition, increment/decrement){
// code goes here
}
@@ -48,6 +51,7 @@ for(initialization, condition, increment/decrement){
for(let i = 0; i <= 5; i++){
console.log(i)
}
+
// 0 1 2 3 4 5
```
@@ -55,7 +59,8 @@ for(let i = 0; i <= 5; i++){
for(let i = 5; i >= 0; i--){
console.log(i)
}
-// 5 4 3 2 1 0
+
+// 5 4 3 2 1 0
```
```js
@@ -79,7 +84,8 @@ const newArr = []
for(let i = 0; i < countries.length; i++){
newArr.push(countries[i].toUpperCase())
}
-//["FINLAND", "SWEDEN", "DENMARK", "NORWAY", "ICELAND"]
+
+// ["FINLAND", "SWEDEN", "DENMARK", "NORWAY", "ICELAND"]
```
Adding all elements in the array
@@ -127,6 +133,7 @@ while (i <= 5) {
console.log(i)
i++
}
+
// 0 1 2 3 4 5
```
@@ -138,12 +145,13 @@ do {
console.log(i)
i++
} while (i <= 5)
+
// 0 1 2 3 4 5
```
### for of loop
-We use for of loop for arrays. It is very hand way to iterate through an array if we are not interested in the index.
+We use for of loop for arrays. It is very hand way to iterate through an array if we are not interested in the index of each element in the array.
```js
for (const element of arr) {
@@ -156,13 +164,17 @@ for (const element of arr) {
const numbers = [1, 2, 3, 4, 5]
for (const num of numbers) {
- console.log(num) //1 2 3 4 5
+ console.log(num)
}
+// 1 2 3 4 5
+
for (const num of numbers) {
- console.log(num * num) //1 4 9 16 25
+ console.log(num * num)
}
+// 1 4 9 16 25
+
// adding all the numbers in the array
let sum = 0
for (const num of numbers) {
@@ -170,8 +182,6 @@ for (const num of numbers) {
}
console.log(sum) // 15
-
-
const webTechs = [
'HTML',
'CSS',
@@ -183,11 +193,13 @@ const webTechs = [
]
for (const tech of webTechs) {
- console.log(tech.toUpperCase()) // HTML CSS JAVASCRIPT REACT NODE MONGODB
+ console.log(tech.toUpperCase())
}
+// HTML CSS JAVASCRIPT REACT NODE MONGODB
+
for (const tech of webTechs) {
- console.log(tech[0]) //get only the first letter of each element, H C J R N M
+ console.log(tech[0]) // get only the first letter of each element, H C J R N M
}
```
@@ -204,16 +216,42 @@ console.log(newArr) // ["FINLAND", "SWEDEN", "NORWAY", "DENMARK", "ICELAND"]
### break
-content will be added soon
+Break is used to interrupt a loop.
+
+```js
+for(let i = 0; i <= 5; i++){
+ if(i == 3){
+ break
+ }
+ console.log(i)
+}
+
+// 0 1 2
+```
+
+The above code stops if 3 found in the iteration process.
### continue
-content will added soon
+We use the keyword *continue* to skip a certain iterations.
+
+```js
+for(let i = 0; i <= 5; i++){
+ if(i == 3){
+ continue
+ }
+ console.log(i)
+}
+
+// 0 1 2 4 5
+```
🌕 You are so brave, you made it to this far. Now, you have gained the power to automate repetitive and tedious tasks. You have just completed day 6 challenges and you are 6 steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
## 💻 Exercises:Day 6
+### Exercises: Level 1
+
```js
const countries = [
'Albania',
@@ -293,16 +331,16 @@ content will added soon
7. Use for loop to iterate from 0 to 100 and print only even numbers
8. Use for loop to iterate from 0 to 100 and print only odd numbers
9. Use for loop to iterate from 0 to 100 and print only prime numbers
-10. Use for loop to iterate from 0 to 100 and print and print the sum of all numbers.
+10. Use for loop to iterate from 0 to 100 and print the sum of all numbers.
```sh
- The sum all numbers is 5050.
+ The sum of all numbers from 0 to 100 is 5050.
```
11. Use for loop to iterate from 0 to 100 and print the sum of all evens and the sum of all odds.
```sh
- The sum of all evens is 2550. And the sum of all odds is 2500.
+ The sum of all evens from 0 to 100 is 2550. And the sum of all odds from 0 to 100 is 2500.
```
12. Use for loop to iterate from 0 to 100 and print the sum of all evens and the sum of all odds. Print sum of evens and sum of odds as array
@@ -319,7 +357,9 @@ content will added soon
5j2khz
```
-16. Develop a small script which generate any number of characters random id:
+### Exercises: Level 2
+
+1. Develop a small script which generate any number of characters random id:
```sh
fe3jo1gl124g
@@ -329,31 +369,31 @@ content will added soon
xkqci4utda1lmbelpkm03rba
```
-17. Write a script which generates a random hexadecimal number.
+1. Write a script which generates a random hexadecimal number.
```sh
'#ee33df'
```
-18. Write a script which generates a random rgb color number.
+1. Write a script which generates a random rgb color number.
```sh
rgb(240,180,80)
```
-19. Using the above countries array, create the following new array.
+1. Using the above countries array, create the following new array.
```sh
["ALBANIA", "BOLIVIA", "CANADA", "DENMARK", "ETHIOPIA", "FINLAND", "GERMANY", "HUNGARY", "IRELAND", "JAPAN", "KENYA"]
```
-20. Using the above countries array, create an array for countries length'.
+1. Using the above countries array, create an array for countries length'.
```sh
[7, 7, 6, 7, 8, 7, 7, 7, 7, 5, 5]
```
-21. Use the countries array to create the following array of arrays:
+1. Use the countries array to create the following array of arrays:
```sh
[
@@ -371,42 +411,41 @@ content will added soon
]
```
-22. In above countries array, check if there is a country or countries containing the word 'land'. If there are countries containing 'land', print it as array. If there is no country containing the word 'land', print 'These are countries without land'.
+2. In above countries array, check if there is a country or countries containing the word 'land'. If there are countries containing 'land', print it as array. If there is no country containing the word 'land', print 'All these countries are without land'.
```sh
['Finland', 'Iceland']
```
-23. In above countries array, check if there a country or countries end with a substring 'ia'. If there are countries end with, print it as array. If there is no country containing the word 'land', print 'These are countries ends without ia'.
+3. In above countries array, check if there is a country or countries end with a substring 'ia'. If there are countries end with, print it as array. If there is no country containing the word 'ai', print 'These are countries ends without ia'.
```sh
['Albania', 'Bolivia','Ethiopia']
```
-24. Using the above countries array, find the country containing the biggest number of characters.
+4. Using the above countries array, find the country containing the biggest number of characters.
```sh
Ethiopia
```
-25. Using the above countries array, find the country containing only 5 characters.
+5. Using the above countries array, find the country containing only 5 characters.
```sh
['Japan', 'Kenya']
```
-26. Find the longest word in the webTechs array
-27. Use the webTechs are to create the following array of arrays:
+6. Find the longest word in the webTechs array
+7. Use the webTechs array to create the following array of arrays:
```sh
[["HTML", 4], ["CSS", 3],["JavaScript", 10],["React", 5],["Redux", 5],["Node", 4],["MongoDB", 7]]
```
-28. An application created using MongoDB, Express, React and Node is called a MERN stack. Create the acronym MERN by using the array mernStack
-
-29. Iterate through the array, ["HTML", "CSS", "JS", "React", "Redux", "Node", "Express", "MongoDB"] using a for loop or for of loop and print out the items.
-30. This is a fruit array , ['banana', 'orange', 'mango', 'lemon'] reverse the order using loop without using a reverse method.
-31. Print all the elements of array as shown below.
+8. An application created using MongoDB, Express, React and Node is called a MERN stack app. Create the acronym MERN by using the array mernStack
+9. Iterate through the array, ["HTML", "CSS", "JS", "React", "Redux", "Node", "Express", "MongoDB"] using a for loop or for of loop and print out the items.
+10. This is a fruit array , ['banana', 'orange', 'mango', 'lemon'] reverse the order using loop without using a reverse method.
+11. Print all the elements of array as shown below.
```js
const fullStack = [
@@ -424,16 +463,19 @@ content will added soon
EXPRESS
MONGODB
```
-32. Copy countries array(Avoid mutation)
-33. Arrays are mutable. Create a copy of array which does not modify the original. Sort the copied array and store in a variable sortedCountries
-34. Sort the webTechs array and mernStack array
-35. Extract all the countries contain the word 'land' from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
-36. Find the country containing the hightest number of characters in the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js)
-37. Extract all the countries contain the word 'land' from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
-38. Extract all the countries containing only four characters from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
-39. Extract all the countries containing two or more words from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
-40. Reverse the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and capitalize each country and stored it as an array
+
+### Exercises: Level 3
+
+1. Copy countries array(Avoid mutation)
+1. Arrays are mutable. Create a copy of array which does not modify the original. Sort the copied array and store in a variable sortedCountries
+1. Sort the webTechs array and mernStack array
+1. Extract all the countries contain the word 'land' from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
+1. Find the country containing the hightest number of characters in the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js)
+1. Extract all the countries contain the word 'land' from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
+1. Extract all the countries containing only four characters from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
+1. Extract all the countries containing two or more words from the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and print it as array
+1. Reverse the [countries array](https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js) and capitalize each country and stored it as an array
🎉 CONGRATULATIONS ! 🎉
-[<< Day 5](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/05_Day/05_day_arrays.md) | [Day 7 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/07_Day/07_day_functions.md)
+[<< Day 5](../05_Day_Arrays/05_day_arrays.md) | [Day 7 >>](../07_Day_Functions/07_day_functions.md)
diff --git a/06_Day/06_day_starter/data/countries.js b/06_Day_Loops/06_day_starter/data/countries.js
similarity index 100%
rename from 06_Day/06_day_starter/data/countries.js
rename to 06_Day_Loops/06_day_starter/data/countries.js
diff --git a/06_Day/06_day_starter/index.html b/06_Day_Loops/06_day_starter/index.html
similarity index 100%
rename from 06_Day/06_day_starter/index.html
rename to 06_Day_Loops/06_day_starter/index.html
diff --git a/06_Day/06_day_starter/scripts/main.js b/06_Day_Loops/06_day_starter/scripts/main.js
similarity index 100%
rename from 06_Day/06_day_starter/scripts/main.js
rename to 06_Day_Loops/06_day_starter/scripts/main.js
diff --git a/07_Day/07_day_functions.md b/07_Day_Functions/07_day_functions.md
similarity index 72%
rename from 07_Day/07_day_functions.md
rename to 07_Day_Functions/07_day_functions.md
index cb78a19..202ffad 100644
--- a/07_Day/07_day_functions.md
+++ b/07_Day_Functions/07_day_functions.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Functions
@@ -13,11 +13,11 @@
-[<< Day 6](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/06_Day/06_day_loops.md) | [Day 8 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/08_Day/08_day_objects.md)
+[<< Day 6](../06_Day_Loops/06_day_loops.md) | [Day 8 >>](../08_Day_Objects/08_day_objects.md)
-- [📔 Day 7](#%f0%9f%93%94-day-7)
+- [📔 Day 7](#-day-7)
- [Functions](#functions)
- [Function Declaration](#function-declaration)
- [Function without a parameter and return](#function-without-a-parameter-and-return)
@@ -34,7 +34,10 @@
- [Arrow Function](#arrow-function)
- [Function with default parameters](#function-with-default-parameters)
- [Function declaration versus Arrow function](#function-declaration-versus-arrow-function)
- - [💻 Exercises](#%f0%9f%92%bb-exercises)
+ - [💻 Exercises](#-exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 7
@@ -76,12 +79,13 @@ Function can be declared without a parameter.
**Example:**
```js
-// function without parameter, a function which square a number
+// function without parameter, a function which make a number square
function square() {
let num = 2
let sq = num * num
console.log(sq)
}
+
square() // 4
// function without parameter
@@ -92,18 +96,20 @@ function addTwoNumbers() {
console.log(sum)
}
-addTwoNumbers() // function has to be called to be executed by it name
+
+addTwoNumbers() // a function has to be called by its name to be executed
```
```js
- function generateFullName (){
+ function printFullName (){
let firstName = 'Asabeneh'
let lastName = 'Yetayeh'
let space = ' '
let fullName = firstName + space + lastName
console.log(fullName)
}
- generateFullName() // calling a function
+
+printFullName() // calling a function
```
### Function returning value
@@ -111,14 +117,14 @@ addTwoNumbers() // function has to be called to be executed by it name
Function can also return values, if a function does not return values the value of the function is undefined. Let us write the above functions with return. From now on, we return value to a function instead of printing it.
```js
-function generateFullName (){
+function printFullName (){
let firstName = 'Asabeneh'
let lastName = 'Yetayeh'
let space = ' '
let fullName = firstName + space + lastName
return fullName
}
-console.log(generateFullName())
+console.log(printFullName())
```
```js
@@ -167,19 +173,20 @@ function functionName(parm1, parm2) {
//code goes her
}
functionName(parm1, parm2) // during calling or invoking two arguments needed
-// Function without parameter doesn't take input, so lets make a parameter with parameter
+// Function without parameter doesn't take input, so lets make a function with parameters
function sumTwoNumbers(numOne, numTwo) {
let sum = numOne + numTwo
console.log(sum)
}
sumTwoNumbers(10, 20) // calling functions
// If a function doesn't return it doesn't store data, so it should return
-function sumTwoNumbersAndReturn(numOne, numTwo) {
+
+function sumTwoNumbers(numOne, numTwo) {
let sum = numOne + numTwo
return sum
}
-console.log(sumTwoNumbersAndReturn(10, 20))
+console.log(sumTwoNumbers(10, 20))
function printFullName(firstName, lastName) {
return `${firstName} ${lastName}`
}
@@ -200,7 +207,7 @@ functionName(parm1,parm2,parm3,...) // during calling or invoking three argument
function sumArrayValues(arr) {
let sum = 0;
for (let i = 0; i < arr.length; i++) {
- sum = sum + numbers[i];
+ sum = sum + arr[i];
}
return sum;
}
@@ -219,7 +226,7 @@ console.log(areaOfCircle(10))
### Function with unlimited number of parameters
-Sometimes we do not know how many arguments the user going to pass. Therefore, we should know how to write a function which can take unlimited number of arguments. The way we do it has a significant difference between a function declaration(regular function) and arrow function.Let us see examples both in function declaration and arrow function.
+Sometimes we do not know how many arguments the user going to pass. Therefore, we should know how to write a function which can take unlimited number of arguments. The way we do it has a significant difference between a function declaration(regular function) and arrow function. Let us see examples both in function declaration and arrow function.
#### Unlimited number of parameters in regular function
@@ -301,15 +308,9 @@ const anonymousFun = function() {
### Expression Function
-Expression functions are anonymous functions. After we create a function without a name and with assign it to a variable. To return a value from the function we should call the variable. Look at the example below.
+Expression functions are anonymous functions. After we create a function without a name and we assign it to a variable. To return a value from the function we should call the variable. Look at the example below.
```js
-//Declaration function
-function square(n) {
- return n * n
-}
-
-console.log(square(2)) // -> 4
// Function expression
const square = function(n) {
@@ -339,7 +340,7 @@ console.log(squaredNum)
Arrow function is an alternative to write a function, however function declaration and arrow function have some minor differences.
-Arrow function uses arrow instead of the keyword function to declare a function. Let us see both function declaration and arrow function.
+Arrow function uses arrow instead of the keyword *function* to declare a function. Let us see both function declaration and arrow function.
```js
// This is how we write normal or declaration function
@@ -354,9 +355,10 @@ const square = n => {
return n * n
}
-console.log(square(2)) // -> 4
-// if we have only one line, it can be written as follows, explicit return
-const square = n => n * n // -> 4
+console.log(square(2)) // -> 4
+
+// if we have only one line in the code block, it can be written as follows, explicit return
+const square = n => n * n // -> 4
```
```js
@@ -500,10 +502,14 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
### Function declaration versus Arrow function
+It ill be covered in other time
+
🌕 You are a rising star, now you knew function . Now, you are super charged with the power of functions. You have just completed day 7 challenges and you are 7 steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
## 💻 Exercises
+### Exercises: Level 1
+
1. Declare a function _fullName_ and it print out your full name.
2. Declare a function _fullName_ and now it takes firstName, lastName as a parameter and it returns your full - name.
3. Declare a function _addNumbers_ and it takes two two parameters and it returns sum.
@@ -533,9 +539,11 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
console.log(findMax(0, -10, -2))
0
```
+
+### Exercises: Level 2
-16. Linear equation is calculated as follows: _ax + by + c = 0_. Write a function which calculates value of a linear equation, _solveLinEquation_.
-17. Quadratic equation is calculated as follows: _ax2 + bx + c = 0_. Write a function which calculates value or values of a quadratic equation, _solveQuadEquation_.
+1. Linear equation is calculated as follows: _ax + by + c = 0_. Write a function which calculates value of a linear equation, _solveLinEquation_.
+1. Quadratic equation is calculated as follows: _ax2 + bx + c = 0_. Write a function which calculates value or values of a quadratic equation, _solveQuadEquation_.
```js
console.log(solveQuadratic()) // {0}
@@ -546,22 +554,22 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
console.log(solveQuadratic(1, -1, 0)) //{1, 0}
```
-18. Declare a function name _printArray_. It takes array as a parameter and it prints out each value of the array.
-19. 11. Write a function name _showDateTime_ which shows time in this format: 08/01/2020 04:08 using the Date object.
+1. Declare a function name _printArray_. It takes array as a parameter and it prints out each value of the array.
+1. Write a function name _showDateTime_ which shows time in this format: 08/01/2020 04:08 using the Date object.
```sh
showDateTime()
08/01/2020 04:08
```
-20. Declare a function name _swapValues_. This function swaps value of x to y.
+1. Declare a function name _swapValues_. This function swaps value of x to y.
```js
swapValues(3, 4) // x => 4, y=>3
swapValues(4, 5) // x = 5, y = 4
```
-21. Declare a function name _reverseArray_. It takes array as a parameter and it returns the reverse of the array (don't use method).
+1. Declare a function name _reverseArray_. It takes array as a parameter and it returns the reverse of the array (don't use method).
```js
console.log(reverseArray([1, 2, 3, 4, 5]))
@@ -570,13 +578,13 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
//['C', 'B', 'A']
```
-22. Declare a function name _capitalizeArray_. It takes array as a parameter and it returns the - capitalizedarray.
-23. Declare a function name _addItem_. It takes an item parameter and it returns an array after adding the item
-24. Declare a function name _removeItem_. It takes an index parameter and it returns an array after removing an item
-25. Declare a function name _sumOfNumbers_. It takes a number parameter and it adds all the numbers in that range.
-26. Declare a function name _sumOfOdds_. It takes a number parameter and it adds all the odd numbers in that - range.
-27. Declare a function name _sumOfEven_. It takes a number parameter and it adds all the even numbers in that - range.
-28. Declare a function name evensAndOdds . It takes a positive integer as parameter and it counts number of evens and odds in the number.
+1. Declare a function name _capitalizeArray_. It takes array as a parameter and it returns the - capitalizedarray.
+1. Declare a function name _addItem_. It takes an item parameter and it returns an array after adding the item
+1. Declare a function name _removeItem_. It takes an index parameter and it returns an array after removing an item
+1. Declare a function name _sumOfNumbers_. It takes a number parameter and it adds all the numbers in that range.
+1. Declare a function name _sumOfOdds_. It takes a number parameter and it adds all the odd numbers in that - range.
+1. Declare a function name _sumOfEven_. It takes a number parameter and it adds all the even numbers in that - range.
+1. Declare a function name evensAndOdds . It takes a positive integer as parameter and it counts number of evens and odds in the number.
```sh
evensAndOdds(100);
@@ -584,30 +592,32 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
The number of evens are 51.
```
-29. Write a function which takes any number of arguments and return the sum of the arguments
+1. Write a function which takes any number of arguments and return the sum of the arguments
```js
sum(1, 2, 3) // -> 6
sum(1, 2, 3, 4) // -> 10
```
-30. Writ a function which generates a _randomUserIp_.
-31. Write a function which generates a _randomMacAddress_
-32. Declare a function name _randomHexaNumberGenerator_. When this function is called it generates a random hexadecimal number. The function return the hexadecimal number.
+1. Writ a function which generates a _randomUserIp_.
+1. Write a function which generates a _randomMacAddress_
+1. Declare a function name _randomHexaNumberGenerator_. When this function is called it generates a random hexadecimal number. The function return the hexadecimal number.
```sh
console.log(randomHexaNumberGenerator());
'#ee33df'
```
-33. Declare a function name _userIdGenerator_. When this function is called it generates seven character id. The function return the id.
+1. Declare a function name _userIdGenerator_. When this function is called it generates seven character id. The function return the id.
```sh
console.log(userIdGenerator());
41XTDbE
```
-34. Modify question number n . Declare a function name _userIdGeneratedByUser_. It doesn’t take any parameter but it takes two inputs using prompt(). One of the input is the number of characters and the second input is the number of ids which are supposed to be generated.
+### Exercises: Level 3
+
+1. Modify question number n . Declare a function name _userIdGeneratedByUser_. It doesn’t take any parameter but it takes two inputs using prompt(). One of the input is the number of characters and the second input is the number of ids which are supposed to be generated.
```sh
userIdGeneratedByUser()
@@ -626,18 +636,18 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
'
```
-35. Write a function name _rgbColorGenerator_ and it generates rgb colors.
+1. Write a function name _rgbColorGenerator_ and it generates rgb colors.
```sh
rgbColorGenerator()
rgb(125,244,255)
```
-36. Write a function **_arrayOfHexaColors_** which return any number of hexadecimal colors in an array.
-37. Write a function **_arrayOfRgbColors_** which return any number of RGB colors in an array.
-38. Write a function **_convertHexaToRgb_** which converts hexa color to rgb and it returns an rgb color.
-39. Write a function **_convertRgbToHexa_** which converts rgb to hexa color and it returns an hexa color.
-40. Write a function **_generateColors_** which can generate any number of hexa or rgb colors.
+1. Write a function **_arrayOfHexaColors_** which return any number of hexadecimal colors in an array.
+1. Write a function **_arrayOfRgbColors_** which return any number of RGB colors in an array.
+1. Write a function **_convertHexaToRgb_** which converts hexa color to rgb and it returns an rgb color.
+1. Write a function **_convertRgbToHexa_** which converts rgb to hexa color and it returns an hexa color.
+1. Write a function **_generateColors_** which can generate any number of hexa or rgb colors.
```js
console.log(generateColors('hexa', 3)) // ['#a3e12f', '#03ed55', '#eb3d2b']
@@ -646,35 +656,51 @@ console.log('Weight of an object in Newton: ', weightOfObject(100, 1.62)) // gra
console.log(generateColors('rgb', 1)) // 'rgb(33,79, 176)'
```
-41. Call your function _shuffleArray_, it takes an array as a parameter and it returns a shuffled array
-42. Call your function _factorial_, it takes a whole number as a parameter and it return a factorial of the number
-43. Call your function _isEmpty_, it takes a parameter and it checks if it is empty or not
-44. Call your function _sum_, it takes any number of arguments and it returns the sum.
-45. Write a function called _sumOfArrayItems_, it takes an array parameter and return the sum of all the items. Check if all the array items are number types. If not give return reasonable feedback.
-46. Write a function called _average_, it takes an array parameter and returns the average of the items. Check if all the array items are number types. If not give return reasonable feedback.
-47. Write a function called _modifyArray_ takes array as parameter and modifies the fifth item of the array and return the array. If the array length is less than five it return 'item not found'.
+1. Call your function _shuffleArray_, it takes an array as a parameter and it returns a shuffled array
+1. Call your function _factorial_, it takes a whole number as a parameter and it return a factorial of the number
+1. Call your function _isEmpty_, it takes a parameter and it checks if it is empty or not
+1. Call your function _sum_, it takes any number of arguments and it returns the sum.
+1. Write a function called _sumOfArrayItems_, it takes an array parameter and return the sum of all the items. Check if all the array items are number types. If not give return reasonable feedback.
+1. Write a function called _average_, it takes an array parameter and returns the average of the items. Check if all the array items are number types. If not give return reasonable feedback.
+1. Write a function called _modifyArray_ takes array as parameter and modifies the fifth item of the array and return the array. If the array length is less than five it return 'item not found'.
```js
console.log(modifyArray(['Avocado', 'Tomato', 'Potato','Mango', 'Lemon','Carrot']);
- // →['Avocado', 'Tomato', 'Potato','Mango', 'LEMON', 'Carrot']
+ ```
+
+ ```sh
+ ['Avocado', 'Tomato', 'Potato','Mango', 'LEMON', 'Carrot']
+ ```
+
+ ```js
console.log(modifyArray(['Google', 'Facebook','Apple', 'Amazon','Microsoft', 'IBM']);
- // →['Google', 'Facebook','Apple', 'Amazon','MICROSOFT', 'IBM']
+ ```
+
+ ```sh
+ ['Google', 'Facebook','Apple', 'Amazon','MICROSOFT', 'IBM']
+ ```
+
+ ```js
console.log(modifyArray(['Google', 'Facebook','Apple', 'Amazon']);
- // →'Not Found'
```
-48. Write a function called _isPrime_, which checks if a number is prime number.
-49. Write a functions which checks if all items are unique in the array.
-50. Write a function which checks if all the items of the array are the same data type.
-51. JavaScript variable name does not support special characters or symbols except \$ or \_. Write a function **\*isValidVariable** which check if a variable is valid or invalid variable.
-52. Write a function which returns array of seven random numbers in a range of 0-9. All the numbers must be unique.
+ ```sh
+ 'Not Found'
+ ```
+
+1. Write a function called _isPrime_, which checks if a number is prime number.
+1. Write a functions which checks if all items are unique in the array.
+1. Write a function which checks if all the items of the array are the same data type.
+1. JavaScript variable name does not support special characters or symbols except \$ or \_. Write a function **isValidVariable** which check if a variable is valid or invalid variable.
+1. Write a function which returns array of seven random numbers in a range of 0-9. All the numbers must be unique.
```js
- sevenRandomNumbers()[(1, 4, 5, 7, 9, 8, 0)]
+ sevenRandomNumbers()
+ [(1, 4, 5, 7, 9, 8, 0)]
```
-53. Write a function called reverseCountries, it takes countries array and first it copy the array and returns the reverse of the original array
+1. Write a function called reverseCountries, it takes countries array and first it copy the array and returns the reverse of the original array
🎉 CONGRATULATIONS ! 🎉
-[<< Day 6](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/06_Day/06_day_loops.md) | [Day 8 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/08_Day/08_day_objects.md)
+[<< Day 6](../06_Day_Loops/06_day_loops.md) | [Day 8 >>](../08_Day_Objects/08_day_objects.md)
\ No newline at end of file
diff --git a/07_Day/07_day_starter/data/countries.js b/07_Day_Functions/07_day_starter/data/countries.js
similarity index 100%
rename from 07_Day/07_day_starter/data/countries.js
rename to 07_Day_Functions/07_day_starter/data/countries.js
diff --git a/07_Day/07_day_starter/index.html b/07_Day_Functions/07_day_starter/index.html
similarity index 100%
rename from 07_Day/07_day_starter/index.html
rename to 07_Day_Functions/07_day_starter/index.html
diff --git a/07_Day/07_day_starter/scripts/main.js b/07_Day_Functions/07_day_starter/scripts/main.js
similarity index 100%
rename from 07_Day/07_day_starter/scripts/main.js
rename to 07_Day_Functions/07_day_starter/scripts/main.js
diff --git a/08_Day/08_day_objects.md b/08_Day_Objects/08_day_objects.md
similarity index 75%
rename from 08_Day/08_day_objects.md
rename to 08_Day_Objects/08_day_objects.md
index 8b03364..de91f2f 100644
--- a/08_Day/08_day_objects.md
+++ b/08_Day_Objects/08_day_objects.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Objects
@@ -13,16 +13,16 @@
-[<< Day 7](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/07_Day/07_day_functions.md) | [Day 9 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_higher_order_functions.md)
+[<< Day 7](../07_Day_Functions/07_day_functions.md) | [Day 9 >>](../09_Day_Higher_order_functions/09_day_higher_order_functions.md)
-- [📔 Day 8](#%f0%9f%93%94-day-8)
+- [📔 Day 8](#-day-8)
- [Scope](#scope)
- [Window Scope](#window-scope)
- [Global scope](#global-scope)
- [Local scope](#local-scope)
- - [📔 Object](#%f0%9f%93%94-object)
+ - [📔 Object](#-object)
- [Creating an empty object](#creating-an-empty-object)
- [Creating an objecting with values](#creating-an-objecting-with-values)
- [Getting values from an object](#getting-values-from-an-object)
@@ -33,7 +33,10 @@
- [Getting object values using Object.values()](#getting-object-values-using-objectvalues)
- [Getting object keys and values using Object.entries()](#getting-object-keys-and-values-using-objectentries)
- [Checking properties using hasOwnProperty()](#checking-properties-using-hasownproperty)
- - [💻 Exercises](#%f0%9f%92%bb-exercises)
+ - [💻 Exercises](#-exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# 📔 Day 8
@@ -70,7 +73,7 @@ console.log(a, b) // accessible
### Global scope
-A globally declared variable can be access every where in the same file. But the term global is relative. It can be global to the file or it can be global relative to some block of codes.
+A globally declared variable can be accessed every where in the same file. But the term global is relative. It can be global to the file or it can be global relative to some block of codes.
```js
//scope.js
@@ -91,7 +94,7 @@ console.log(a, b) // JavaScript 10, accessible
### Local scope
-A local declared variable can be access only certain block code.
+A variable declared as local can be accessed only in certain block code.
```js
//scope.js
@@ -115,7 +118,7 @@ letsLearnScope()
console.log(a, b) // JavaScript 10, accessible
```
-Now, you have an understanding of scope. A variable declared with *var* only scoped to function but variable declared with *let* or *const* is block scope(function block, if block, loop etc)
+Now, you have an understanding of scope. A variable declared with *var* only scoped to function but variable declared with *let* or *const* is block scope(function block, if block, loop etc). Block in JavaScript is a code in between two curly brackets ({}).
```js
//scope.js
@@ -139,7 +142,7 @@ console.log(i)
```
-In ES6 and above there is *let* and *const*, so you will suffer from the sneakiness of *var*. When we use *let* our variable is block scope and it will not infect other parts of our code.
+In ES6 and above there is *let* and *const*, so you will not suffer from the sneakiness of *var*. When we use *let* our variable is block scoped and it will not infect other parts of our code.
```js
//scope.js
@@ -164,12 +167,12 @@ for(let i = 0; i < 3; i++){
```
-The scope *let* and *const* is the same. The difference is only reassigning. We can not change or reassign the value of const variable. I would strongly suggest you to use *let* and *const*, by using *let* and *const* you will writ clean code and avoid hard to debug mistakes. As a rule of thumb, you can use *let* for any value which change, *const* for any constant value, array, object, arrow function and function expression.
+The scope *let* and *const* is the same. The difference is only reassigning. We can not change or reassign the value of const variable. I would strongly suggest you to use *let* and *const*, by using *let* and *const* you will writ clean code and avoid hard to debug mistakes. As a rule of thumb, you can use *let* for any value which change, *const* for any constant value, and for array, object, arrow function and function expression.
## 📔 Object
-Everything can be an object and objects do have properties and properties have values, so an object is key value pair. The order of the key is not reserved, or there is no order.
-Creating an object literal. To create an object literal, we use two curly brackets.
+Everything can be an object and objects do have properties and properties have values, so an object is a key value pair. The order of the key is not reserved, or there is no order.
+To create an object literal, we use two curly brackets.
### Creating an empty object
@@ -183,7 +186,7 @@ const person = {}
Now, the person object has firstName, lastName, age, location, skills and isMarried properties. The value of properties or keys could be a string, number, boolean, an object, null, undefined or a function.
-Let us see some examples of object. Each key has a value in object.
+Let us see some examples of object. Each key has a value in the object.
```js
const rectangle = {
@@ -365,7 +368,7 @@ const person = {
city: 'Helsinki'
},
getPersonInfo: function() {
- return `I am ${this.firstName} and I live in ${city}, ${this.country}. I am ${this.age}.`
+ return `I am ${this.firstName} and I live in ${this.city}, ${this.country}. I am ${this.age}.`
}
}
@@ -414,16 +417,21 @@ console.log(copyPerson.hasOwnProperty('name'))
console.log(copyPerson.hasOwnProperty('score'))
```
-🌕 You are astonishing. Now, you are super charged with the power of objects. You have just completed day 7 challenges and you are 7 steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
+🌕 You are astonishing. Now, you are super charged with the power of objects. You have just completed day 8 challenges and you are 8 steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
## 💻 Exercises
+### Exercises: Level 1
+
1. Create an empty object called dog
1. Print the the dog object on the console
1. Add name, legs, color, age and bark properties for the dog object. The bark property is a method which return _woof woof_
1. Get name, legs, color, age and bark value from the dog object
1. Set new properties the dog object: breed, getDogInfo
-1. Create an object literal called _personAccount_. It has _firstName, lastName, incomes, expenses_ properties and it has _totalIncome, totalExpense, accountInfo,addIncome, addExpense_ and _accountBalance_ methods. Incomes is a set of incomes and its description and expenses is a set of incomes and its description.
+
+### Exercises: Level 2
+
+1. Find the person who has many skills in the users object.
1. Count logged in users,count users having greater than equal to 50 points from the following object.
````js
@@ -479,15 +487,103 @@ console.log(copyPerson.hasOwnProperty('score'))
}
}```
- ````
-
1. Find people who are MERN stack developer from the users object
1. Set your name in the users object without modifying the original users object
1. Get all keys or properties of users object
1. Get all the values of users object
1. Use the countries object to print a country name, capital, populations and languages.
+### Exercises: Level 3
+
+1. Create an object literal called _personAccount_. It has _firstName, lastName, incomes, expenses_ properties and it has _totalIncome, totalExpense, accountInfo,addIncome, addExpense_ and _accountBalance_ methods. Incomes is a set of incomes and its description and expenses is a set of incomes and its description.
+2. **** Questions:2, 3 and 4 are based on the following two arrays:users and products ()
+
+ ```js
+ const users = [
+ {
+ _id: 'ab12ex',
+ username: 'Alex',
+ email: 'alex@alex.com',
+ password: '123123',
+ createdAt:'08/01/2020 9:00 AM',
+ isLoggedIn: false
+ },
+ {
+ _id: 'fg12cy',
+ username: 'Asab',
+ email: 'asab@asab.com',
+ password: '123456',
+ createdAt:'08/01/2020 9:30 AM',
+ isLoggedIn: true
+ },
+ {
+ _id: 'zwf8md',
+ username: 'Brook',
+ email: 'brook@brook.com',
+ password: '123111',
+ createdAt:'08/01/2020 9:45 AM',
+ isLoggedIn: true
+ },
+ {
+ _id: 'eefamr',
+ username: 'Martha',
+ email: 'martha@martha.com',
+ password: '123222',
+ createdAt:'08/01/2020 9:50 AM',
+ isLoggedIn: false
+ },
+ {
+ _id: 'ghderc',
+ username: 'Thomas',
+ email: 'thomas@thomas.com',
+ password: '123333',
+ createdAt:'08/01/2020 10:00 AM',
+ isLoggedIn: false
+ }
+ ];
+
+ const products = [
+ {
+ _id: 'eedfcf',
+ name: 'mobile phone',
+ description: 'Huawei Honor',
+ price: 200,
+ ratings: [
+ { userId: 'fg12cy', rate: 5 },
+ { userId: 'zwf8md', rate: 4.5 }
+ ],
+ likes: []
+ },
+ {
+ _id: 'aegfal',
+ name: 'Laptop',
+ description: 'MacPro: System Darwin',
+ price: 2500,
+ ratings: [],
+ likes: ['fg12cy']
+ },
+ {
+ _id: 'hedfcg',
+ name: 'TV',
+ description: 'Smart TV:Procaster',
+ price: 400,
+ ratings: [{ userId: 'fg12cy', rate: 5 }],
+ likes: ['fg12cy']
+ }
+ ]
+ ```
+
+ Imagine you are getting the above users collection from a MongoDB database.
+ a. Create a function called signUp which allows user to add to the collection. If user exists, inform the user that he has already an account.
+ b. Create a function called signIn which allows user to sign in to the application
+
+3. The products array has three elements and each of them has six properties.
+ a. Create a function called rateProduct which rates the product
+ b. Create a function called averageRating which calculate the average rating of a product
+
+4. Create a function called likeProduct. This function will helps to like to the product if it is not liked and remove like if it was liked.
+
🎉 CONGRATULATIONS ! 🎉
-[<< Day 7](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/07_Day/07_day_functions.md) | [Day 9 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_higher_order_functions.md)
+[<< Day 7](../07_Day_Functions/07_day_functions.md) | [Day 9 >>](../09_Day_Higher_order_functions/09_day_higher_order_functions.md)
diff --git a/08_Day/08_day_starter/data/countries_data.js b/08_Day_Objects/08_day_starter/data/countries_data.js
similarity index 100%
rename from 08_Day/08_day_starter/data/countries_data.js
rename to 08_Day_Objects/08_day_starter/data/countries_data.js
diff --git a/08_Day/08_day_starter/index.html b/08_Day_Objects/08_day_starter/index.html
similarity index 100%
rename from 08_Day/08_day_starter/index.html
rename to 08_Day_Objects/08_day_starter/index.html
diff --git a/08_Day/08_day_starter/scripts/main.js b/08_Day_Objects/08_day_starter/scripts/main.js
similarity index 100%
rename from 08_Day/08_day_starter/scripts/main.js
rename to 08_Day_Objects/08_day_starter/scripts/main.js
diff --git a/09_Day/09_day_higher_order_functions.md b/09_Day_Higher_order_functions/09_day_higher_order_functions.md
similarity index 78%
rename from 09_Day/09_day_higher_order_functions.md
rename to 09_Day_Higher_order_functions/09_day_higher_order_functions.md
index 7d5728a..12faddb 100644
--- a/09_Day/09_day_higher_order_functions.md
+++ b/09_Day_Higher_order_functions/09_day_higher_order_functions.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Higher Order Functions
@@ -13,7 +13,7 @@
-[<< Day 8](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/08_Day/08_day_objects.md) | [Day 10 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/10_Day/10_day_Set_and_Map.md)
+[<< Day 8](../08_Day_Objects/08_day_objects.md) | [Day 10 >>](../10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md)
@@ -37,7 +37,10 @@
- [Sorting string values](#sorting-string-values)
- [Sorting Numeric values](#sorting-numeric-values)
- [Sorting Object Arrays](#sorting-object-arrays)
- - [💻 Exercises](#%f0%9f%92%bb-exercises)
+ - [💻 Exercises](#-exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# Day 9
@@ -553,6 +556,8 @@ console.log(users) // sorted ascending
## 💻 Exercises
+### Exercises: Level 1
+
```js
const countries = ['Finland', 'Sweden', 'Denmark', 'Norway', 'IceLand']
const names = ['Asabeneh', 'Mathias', 'Elias', 'Brook']
@@ -582,8 +587,6 @@ const products = [
13. Use **_filter_** to filter out countries containing six letters and more in the country array.
14. Use **_filter_** to filter out country start with 'E';
15. Use **_filter_** to filter out only prices with values.
-16. Find the total price of products by chaining two or more array iterators(eg. arr.map(callback).filter(callback).reduce(callback))
-17. Find the sum of price of products using only reduce reduce(callback))
18. Declare a function called getStringLists which takes an array as a parameter and then returns an array only with string items.
19. Use **_reduce_** to sum all the numbers in the numbers array.
20. Use **_reduce_** to concatenate all the countries and to produce this sentence: **_Estonia, Finland, Sweden, Denmark, Norway, and IceLand are north European countries_**
@@ -595,13 +598,21 @@ const products = [
26. Use **_findIndex_** to find the position of the first country containing only six letters in the countries array
27. Use **_findIndex_** to find the position of **_Norway_** if it doesn't exist in the array you will get -1.
28. Use **_findIndex_** to find the position of **_Russia_** if it doesn't exist in the array you will get -1.
-29. Declare a function called **_categorizeCountries_** which returns an array of countries which have some common pattern(you find the countries array in this repository as countries.js(eg 'land', 'ia', 'island','stan')).
-30. Create a function which return an array of objects, which is the letter and the number of times the letter use to start with a name of a country.
-31. Declare a **_getFirstTenCountries_** function and return an array of ten countries. Use different functional programming to work on the countries.js array
-32. Declare a **_getLastTenCountries_** function which which returns the last ten countries in the countries array.
-33. Find out which _letter_ is used many _times_ as initial for a country name from the countries array (eg. Finland, Fiji, France etc)
-34. Use the countries information, in the data folder. Sort countries by name, by capital, by population
-35. \*\*\* Find the 10 most spoken languages:
+
+### Exercises: Level 2
+
+1. Find the total price of products by chaining two or more array iterators(eg. arr.map(callback).filter(callback).reduce(callback))
+1. Find the sum of price of products using only reduce reduce(callback))
+1. Declare a function called **_categorizeCountries_** which returns an array of countries which have some common pattern(you find the countries array in this repository as countries.js(eg 'land', 'ia', 'island','stan')).
+1. Create a function which return an array of objects, which is the letter and the number of times the letter use to start with a name of a country.
+1. Declare a **_getFirstTenCountries_** function and return an array of ten countries. Use different functional programming to work on the countries.js array
+1. Declare a **_getLastTenCountries_** function which which returns the last ten countries in the countries array.
+1. Find out which _letter_ is used many _times_ as initial for a country name from the countries array (eg. Finland, Fiji, France etc)
+
+### Exercises: Level 3
+
+1. Use the countries information, in the data folder. Sort countries by name, by capital, by population
+1. \*\*\* Find the 10 most spoken languages:
````js
// Your output should look like this
@@ -628,67 +639,66 @@ const products = [
````
-36. \*\*\* Use countries_data.js file create a function which create the ten most populated countries
-
-````js
-console.log(mostPopulatedCountries(countries, 10))
-
-[
-{country: 'China', population: 1377422166},
-{country: 'India', population: 1295210000},
-{country: 'United States of America', population: 323947000},
-{country: 'Indonesia', population: 258705000},
-{country: 'Brazil', population: 206135893},
-{country: 'Pakistan', population: 194125062},
-{country: 'Nigeria', population: 186988000},
-{country: 'Bangladesh', population: 161006790},
-{country: 'Russian Federation', population: 146599183},
-{country: 'Japan', population: 126960000}
-]
-
-console.log(mostPopulatedCountries(countries, 3))
-[
-{country: 'China', population: 1377422166},
-{country: 'India', population: 1295210000},
-{country: 'United States of America', population: 323947000}
-]```
-
-````
-
-37. \*\*\* Try to develop a program which calculate measure of central tendency of a sample(mean, median, mode) and measure of variability(range, variance, standard deviation). In addition to those measures find the min, max, count, percentile, and frequency distribution of the sample. You can create an object called statistics and create all the functions which do statistical calculations as method for the statistics object. Check the output below.
+1. \*\*\* Use countries_data.js file create a function which create the ten most populated countries
-```js
-const ages = [31, 26, 34, 37, 27, 26, 32, 32, 26, 27, 27, 24, 32, 33, 27, 25, 26, 38, 37, 31, 34, 24, 33, 29, 26]
-
-console.log('Count:', statistics.count()) // 25
-console.log('Sum: ', statistics.sum()) // 744
-console.log('Min: ', statistics.min()) // 24
-console.log('Max: ', statistics.max()) // 38
-console.log('Range: ', statistics.range() // 14
-console.log('Mean: ', statistics.mean()) // 30
-console.log('Median: ',statistics.median()) // 29
-console.log('Mode: ', statistics.mode()) // {'mode': 26, 'count': 5}
-console.log('Variance: ',statistics.var()) // 17.5
-console.log('Standard Deviation: ', statistics.std()) // 4.2
-console.log('Variance: ',statistics.var()) // 17.5
-console.log('Frequency Distribution: ',statistics.freqDist()) # [(20.0, 26), (16.0, 27), (12.0, 32), (8.0, 37), (8.0, 34), (8.0, 33), (8.0, 31), (8.0, 24), (4.0, 38), (4.0, 29), (4.0, 25)]
-```
+ ````js
+ console.log(mostPopulatedCountries(countries, 10))
-```sh
-console.log(statistics.describe())
-Count: 25
-Sum: 744
-Min: 24
-Max: 38
-Range: 14
-Mean: 30
-Median: 29
-Mode: (26, 5)
-Variance: 17.5
-Standard Deviation: 4.2
-Frequency Distribution: [(20.0, 26), (16.0, 27), (12.0, 32), (8.0, 37), (8.0, 34), (8.0, 33), (8.0, 31), (8.0, 24), (4.0, 38), (4.0, 29), (4.0, 25)]
-```
+ [
+ {country: 'China', population: 1377422166},
+ {country: 'India', population: 1295210000},
+ {country: 'United States of America', population: 323947000},
+ {country: 'Indonesia', population: 258705000},
+ {country: 'Brazil', population: 206135893},
+ {country: 'Pakistan', population: 194125062},
+ {country: 'Nigeria', population: 186988000},
+ {country: 'Bangladesh', population: 161006790},
+ {country: 'Russian Federation', population: 146599183},
+ {country: 'Japan', population: 126960000}
+ ]
+
+ console.log(mostPopulatedCountries(countries, 3))
+ [
+ {country: 'China', population: 1377422166},
+ {country: 'India', population: 1295210000},
+ {country: 'United States of America', population: 323947000}
+ ]
+ ```
+
+1. \*\*\* Try to develop a program which calculate measure of central tendency of a sample(mean, median, mode) and measure of variability(range, variance, standard deviation). In addition to those measures find the min, max, count, percentile, and frequency distribution of the sample. You can create an object called statistics and create all the functions which do statistical calculations as method for the statistics object. Check the output below.
+
+ ```js
+ const ages = [31, 26, 34, 37, 27, 26, 32, 32, 26, 27, 27, 24, 32, 33, 27, 25, 26, 38, 37, 31, 34, 24, 33, 29, 26]
+
+ console.log('Count:', statistics.count()) // 25
+ console.log('Sum: ', statistics.sum()) // 744
+ console.log('Min: ', statistics.min()) // 24
+ console.log('Max: ', statistics.max()) // 38
+ console.log('Range: ', statistics.range() // 14
+ console.log('Mean: ', statistics.mean()) // 30
+ console.log('Median: ',statistics.median()) // 29
+ console.log('Mode: ', statistics.mode()) // {'mode': 26, 'count': 5}
+ console.log('Variance: ',statistics.var()) // 17.5
+ console.log('Standard Deviation: ', statistics.std()) // 4.2
+ console.log('Variance: ',statistics.var()) // 17.5
+ console.log('Frequency Distribution: ',statistics.freqDist()) # [(20.0, 26), (16.0, 27), (12.0, 32), (8.0, 37), (8.0, 34), (8.0, 33), (8.0, 31), (8.0, 24), (4.0, 38), (4.0, 29), (4.0, 25)]
+ ```
+
+ ```sh
+ console.log(statistics.describe())
+ Count: 25
+ Sum: 744
+ Min: 24
+ Max: 38
+ Range: 14
+ Mean: 30
+ Median: 29
+ Mode: (26, 5)
+ Variance: 17.5
+ Standard Deviation: 4.2
+ Frequency Distribution: [(20.0, 26), (16.0, 27), (12.0, 32), (8.0, 37), (8.0, 34), (8.0, 33), (8.0, 31), (8.0, 24), (4.0, 38), (4.0, 29), (4.0, 25)]
+ ```
🎉 CONGRATULATIONS ! 🎉
-[<< Day 8](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/08_Day/08_day_objects.md) | [Day 10 >>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/10_Day/10_day_Set_and_Map.md)
+[<< Day 8](../08_Day_Objects/08_day_objects.md) | [Day 10 >>](../10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md)
diff --git a/09_Day/09_day_starter/data/countries_data.js b/09_Day_Higher_order_functions/09_day_starter/data/countries_data.js
similarity index 100%
rename from 09_Day/09_day_starter/data/countries_data.js
rename to 09_Day_Higher_order_functions/09_day_starter/data/countries_data.js
diff --git a/09_Day/09_day_starter/index.html b/09_Day_Higher_order_functions/09_day_starter/index.html
similarity index 100%
rename from 09_Day/09_day_starter/index.html
rename to 09_Day_Higher_order_functions/09_day_starter/index.html
diff --git a/09_Day/09_day_starter/scripts/main.js b/09_Day_Higher_order_functions/09_day_starter/scripts/main.js
similarity index 100%
rename from 09_Day/09_day_starter/scripts/main.js
rename to 09_Day_Higher_order_functions/09_day_starter/scripts/main.js
diff --git a/10_Day/10_day_Set_and_Map.md b/10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md
similarity index 86%
rename from 10_Day/10_day_Set_and_Map.md
rename to 10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md
index f5dddf0..a978a88 100644
--- a/10_Day/10_day_Set_and_Map.md
+++ b/10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Sets and Maps
@@ -13,9 +13,9 @@
-[<< Day 9](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_higher_order_functions.md) | [Day 11>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/11_Day/11_destructuring_and_spreading.md)
+[<< Day 9](../09_Day_Higher_order_functions/09_day_higher_order_functions.md) | [Day 11>>](../11_Day_Destructuring_and_spreading/11_day_destructuring_and_spreading.md)
-
+
- [Day 10](#day-10)
- [Set](#set)
@@ -35,6 +35,9 @@
- [Getting a value from Map](#getting-a-value-from-map)
- [Checking key in Map](#checking-key-in-map)
- [Exercises](#exercises)
+ - [Exercises:Level 1](#exerciseslevel-1)
+ - [Exercises:Level 2](#exerciseslevel-2)
+ - [Exercises:Level 3](#exerciseslevel-3)
# Day 10
@@ -384,39 +387,61 @@ Norway Oslo
## Exercises
+### Exercises:Level 1
+
+```js
+const a = {4, 5, 8, 9}
+const b = {3, 4, 5, 7}
+const countries = ['Finland', 'Sweden', 'Norway']
+```
+
1. create an empty set
2. Create a set containing 0 to 10 using loop
3. Remove an element from a set
4. Clear a set
5. Create a set of 5 string elements from array
6. Create a map of countries and number of characters of a country
-7. \*\*\* Find the 10 most spoken languages:
- ````js
+### Exercises:Level 2
+
+1. Find a union b
+2. Find a intersection b
+3. Find a with b
+
+### Exercises:Level 3
+
+1. How many languages are there in the countries object file.
+
+1. \*\*\* Use the countries data to find the 10 most spoken languages:
+
+ ```js
// Your output should look like this
console.log(mostSpokenLanguages(countries, 10))
- [(91, 'English'),
- (45, 'French'),
- (25, 'Arabic'),
- (24, 'Spanish'),
- (9, 'Russian'),
- (9, 'Portuguese'),
- (8, 'Dutch'),
- (7, 'German'),
- (5, 'Chinese'),
- (4, 'Swahili'),
- (4, 'Serbian')]
+ [
+ {'English':91},
+ {'French':45},
+ {'Arabic':25},
+ {'Spanish':24},
+ {'Russian':9},
+ {'Portuguese':9},
+ {'Dutch':8},
+ {'German':7},
+ {'Chinese':5},
+ {'Swahili':4},
+ {'Serbian':4}]
// Your output should look like this
console.log(mostSpokenLanguages(countries, 3))
- [
- (91, 'English'),
- (45, 'French'),
- (25, 'Arabic')
- ]```
- ````
+ [
+ {'English':91},
+ {'French':45},
+ {'Arabic':25}
+ ]
+ ```
+
🎉 CONGRATULATIONS ! 🎉
-[<< Day 9](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_higher_order_functions.md) | [Day 11>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/11_Day/11_destructuring_and_spreading.md)
+
+[<< Day 9](../09_Day_Higher_order_functions/09_day_higher_order_functions.md) | [Day 11>>](../11_Day_Destructuring_and_spreading/11_day_destructuring_and_spreading.md)
diff --git a/10_Day_Sets_and_Maps/10_day_starter/data/countries_data.js b/10_Day_Sets_and_Maps/10_day_starter/data/countries_data.js
new file mode 100644
index 0000000..92acddd
--- /dev/null
+++ b/10_Day_Sets_and_Maps/10_day_starter/data/countries_data.js
@@ -0,0 +1,2013 @@
+const countries = [
+ {
+ name: 'Afghanistan',
+ capital: 'Kabul',
+ languages: ['Pashto', 'Uzbek', 'Turkmen'],
+ population: 27657145,
+ flag: 'https://restcountries.eu/data/afg.svg',
+ currency: 'Afghan afghani'
+ },
+ {
+ name: 'Åland Islands',
+ capital: 'Mariehamn',
+ languages: ['Swedish'],
+ population: 28875,
+ flag: 'https://restcountries.eu/data/ala.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Albania',
+ capital: 'Tirana',
+ languages: ['Albanian'],
+ population: 2886026,
+ flag: 'https://restcountries.eu/data/alb.svg',
+ currency: 'Albanian lek'
+ },
+ {
+ name: 'Algeria',
+ capital: 'Algiers',
+ languages: ['Arabic'],
+ population: 40400000,
+ flag: 'https://restcountries.eu/data/dza.svg',
+ currency: 'Algerian dinar'
+ },
+ {
+ name: 'American Samoa',
+ capital: 'Pago Pago',
+ languages: ['English', 'Samoan'],
+ population: 57100,
+ flag: 'https://restcountries.eu/data/asm.svg',
+ currency: 'United State Dollar'
+ },
+ {
+ name: 'Andorra',
+ capital: 'Andorra la Vella',
+ languages: ['Catalan'],
+ population: 78014,
+ flag: 'https://restcountries.eu/data/and.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Angola',
+ capital: 'Luanda',
+ languages: ['Portuguese'],
+ population: 25868000,
+ flag: 'https://restcountries.eu/data/ago.svg',
+ currency: 'Angolan kwanza'
+ },
+ {
+ name: 'Anguilla',
+ capital: 'The Valley',
+ languages: ['English'],
+ population: 13452,
+ flag: 'https://restcountries.eu/data/aia.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Antarctica',
+ capital: '',
+ languages: ['English', 'Russian'],
+ population: 1000,
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+ flag: 'https://restcountries.eu/data/maf.svg',
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+ flag: 'https://restcountries.eu/data/wsm.svg',
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+ flag: 'https://restcountries.eu/data/smr.svg',
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+ capital: 'Colombo',
+ languages: ['Sinhalese', 'Tamil'],
+ population: 20966000,
+ flag: 'https://restcountries.eu/data/lka.svg',
+ currency: 'Sri Lankan rupee'
+ },
+ {
+ name: 'Sudan',
+ capital: 'Khartoum',
+ languages: ['Arabic', 'English'],
+ population: 39598700,
+ flag: 'https://restcountries.eu/data/sdn.svg',
+ currency: 'Sudanese pound'
+ },
+ {
+ name: 'Suriname',
+ capital: 'Paramaribo',
+ languages: ['Dutch'],
+ population: 541638,
+ flag: 'https://restcountries.eu/data/sur.svg',
+ currency: 'Surinamese dollar'
+ },
+ {
+ name: 'Svalbard and Jan Mayen',
+ capital: 'Longyearbyen',
+ languages: ['Norwegian'],
+ population: 2562,
+ flag: 'https://restcountries.eu/data/sjm.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Swaziland',
+ capital: 'Lobamba',
+ languages: ['English', 'Swati'],
+ population: 1132657,
+ flag: 'https://restcountries.eu/data/swz.svg',
+ currency: 'Swazi lilangeni'
+ },
+ {
+ name: 'Sweden',
+ capital: 'Stockholm',
+ languages: ['Swedish'],
+ population: 9894888,
+ flag: 'https://restcountries.eu/data/swe.svg',
+ currency: 'Swedish krona'
+ },
+ {
+ name: 'Switzerland',
+ capital: 'Bern',
+ languages: ['German', 'French', 'Italian'],
+ population: 8341600,
+ flag: 'https://restcountries.eu/data/che.svg',
+ currency: 'Swiss franc'
+ },
+ {
+ name: 'Syrian Arab Republic',
+ capital: 'Damascus',
+ languages: ['Arabic'],
+ population: 18564000,
+ flag: 'https://restcountries.eu/data/syr.svg',
+ currency: 'Syrian pound'
+ },
+ {
+ name: 'Taiwan',
+ capital: 'Taipei',
+ languages: ['Chinese'],
+ population: 23503349,
+ flag: 'https://restcountries.eu/data/twn.svg',
+ currency: 'New Taiwan dollar'
+ },
+ {
+ name: 'Tajikistan',
+ capital: 'Dushanbe',
+ languages: ['Tajik', 'Russian'],
+ population: 8593600,
+ flag: 'https://restcountries.eu/data/tjk.svg',
+ currency: 'Tajikistani somoni'
+ },
+ {
+ name: 'Tanzania, United Republic of',
+ capital: 'Dodoma',
+ languages: ['Swahili', 'English'],
+ population: 55155000,
+ flag: 'https://restcountries.eu/data/tza.svg',
+ currency: 'Tanzanian shilling'
+ },
+ {
+ name: 'Thailand',
+ capital: 'Bangkok',
+ languages: ['Thai'],
+ population: 65327652,
+ flag: 'https://restcountries.eu/data/tha.svg',
+ currency: 'Thai baht'
+ },
+ {
+ name: 'Timor-Leste',
+ capital: 'Dili',
+ languages: ['Portuguese'],
+ population: 1167242,
+ flag: 'https://restcountries.eu/data/tls.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Togo',
+ capital: 'Lomé',
+ languages: ['French'],
+ population: 7143000,
+ flag: 'https://restcountries.eu/data/tgo.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Tokelau',
+ capital: 'Fakaofo',
+ languages: ['English'],
+ population: 1411,
+ flag: 'https://restcountries.eu/data/tkl.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Tonga',
+ capital: "Nuku'alofa",
+ languages: ['English', 'Tonga (Tonga Islands)'],
+ population: 103252,
+ flag: 'https://restcountries.eu/data/ton.svg',
+ currency: 'Tongan paʻanga'
+ },
+ {
+ name: 'Trinidad and Tobago',
+ capital: 'Port of Spain',
+ languages: ['English'],
+ population: 1349667,
+ flag: 'https://restcountries.eu/data/tto.svg',
+ currency: 'Trinidad and Tobago dollar'
+ },
+ {
+ name: 'Tunisia',
+ capital: 'Tunis',
+ languages: ['Arabic'],
+ population: 11154400,
+ flag: 'https://restcountries.eu/data/tun.svg',
+ currency: 'Tunisian dinar'
+ },
+ {
+ name: 'Turkey',
+ capital: 'Ankara',
+ languages: ['Turkish'],
+ population: 78741053,
+ flag: 'https://restcountries.eu/data/tur.svg',
+ currency: 'Turkish lira'
+ },
+ {
+ name: 'Turkmenistan',
+ capital: 'Ashgabat',
+ languages: ['Turkmen', 'Russian'],
+ population: 4751120,
+ flag: 'https://restcountries.eu/data/tkm.svg',
+ currency: 'Turkmenistan manat'
+ },
+ {
+ name: 'Turks and Caicos Islands',
+ capital: 'Cockburn Town',
+ languages: ['English'],
+ population: 31458,
+ flag: 'https://restcountries.eu/data/tca.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Tuvalu',
+ capital: 'Funafuti',
+ languages: ['English'],
+ population: 10640,
+ flag: 'https://restcountries.eu/data/tuv.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Uganda',
+ capital: 'Kampala',
+ languages: ['English', 'Swahili'],
+ population: 33860700,
+ flag: 'https://restcountries.eu/data/uga.svg',
+ currency: 'Ugandan shilling'
+ },
+ {
+ name: 'Ukraine',
+ capital: 'Kiev',
+ languages: ['Ukrainian'],
+ population: 42692393,
+ flag: 'https://restcountries.eu/data/ukr.svg',
+ currency: 'Ukrainian hryvnia'
+ },
+ {
+ name: 'United Arab Emirates',
+ capital: 'Abu Dhabi',
+ languages: ['Arabic'],
+ population: 9856000,
+ flag: 'https://restcountries.eu/data/are.svg',
+ currency: 'United Arab Emirates dirham'
+ },
+ {
+ name: 'United Kingdom of Great Britain and Northern Ireland',
+ capital: 'London',
+ languages: ['English'],
+ population: 65110000,
+ flag: 'https://restcountries.eu/data/gbr.svg',
+ currency: 'British pound'
+ },
+ {
+ name: 'United States of America',
+ capital: 'Washington, D.C.',
+ languages: ['English'],
+ population: 323947000,
+ flag: 'https://restcountries.eu/data/usa.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Uruguay',
+ capital: 'Montevideo',
+ languages: ['Spanish'],
+ population: 3480222,
+ flag: 'https://restcountries.eu/data/ury.svg',
+ currency: 'Uruguayan peso'
+ },
+ {
+ name: 'Uzbekistan',
+ capital: 'Tashkent',
+ languages: ['Uzbek', 'Russian'],
+ population: 31576400,
+ flag: 'https://restcountries.eu/data/uzb.svg',
+ currency: "Uzbekistani so'm"
+ },
+ {
+ name: 'Vanuatu',
+ capital: 'Port Vila',
+ languages: ['Bislama', 'English', 'French'],
+ population: 277500,
+ flag: 'https://restcountries.eu/data/vut.svg',
+ currency: 'Vanuatu vatu'
+ },
+ {
+ name: 'Venezuela (Bolivarian Republic of)',
+ capital: 'Caracas',
+ languages: ['Spanish'],
+ population: 31028700,
+ flag: 'https://restcountries.eu/data/ven.svg',
+ currency: 'Venezuelan bolívar'
+ },
+ {
+ name: 'Viet Nam',
+ capital: 'Hanoi',
+ languages: ['Vietnamese'],
+ population: 92700000,
+ flag: 'https://restcountries.eu/data/vnm.svg',
+ currency: 'Vietnamese đồng'
+ },
+ {
+ name: 'Wallis and Futuna',
+ capital: 'Mata-Utu',
+ languages: ['French'],
+ population: 11750,
+ flag: 'https://restcountries.eu/data/wlf.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'Western Sahara',
+ capital: 'El Aaiún',
+ languages: ['Spanish'],
+ population: 510713,
+ flag: 'https://restcountries.eu/data/esh.svg',
+ currency: 'Moroccan dirham'
+ },
+ {
+ name: 'Yemen',
+ capital: "Sana'a",
+ languages: ['Arabic'],
+ population: 27478000,
+ flag: 'https://restcountries.eu/data/yem.svg',
+ currency: 'Yemeni rial'
+ },
+ {
+ name: 'Zambia',
+ capital: 'Lusaka',
+ languages: ['English'],
+ population: 15933883,
+ flag: 'https://restcountries.eu/data/zmb.svg',
+ currency: 'Zambian kwacha'
+ },
+ {
+ name: 'Zimbabwe',
+ capital: 'Harare',
+ languages: ['English', 'Shona', 'Northern Ndebele'],
+ population: 14240168,
+ flag: 'https://restcountries.eu/data/zwe.svg',
+ currency: 'Botswana pula'
+ }
+]
diff --git a/10_Day_Sets_and_Maps/10_day_starter/index.html b/10_Day_Sets_and_Maps/10_day_starter/index.html
new file mode 100644
index 0000000..38b79a2
--- /dev/null
+++ b/10_Day_Sets_and_Maps/10_day_starter/index.html
@@ -0,0 +1,17 @@
+
+
+
+
+ 30DaysOfJavaScript:10 Day
+
+
+
+ 30DaysOfJavaScript:10 Day
+ Set and Map
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/10_Day_Sets_and_Maps/10_day_starter/scripts/main.js b/10_Day_Sets_and_Maps/10_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/10_Day_Sets_and_Maps/10_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/11_Day/11_destructuring_and_spread.md b/11_Day_Destructuring_and_spreading/11_day_destructuring_and_spreading.md
similarity index 78%
rename from 11_Day/11_destructuring_and_spread.md
rename to 11_Day_Destructuring_and_spreading/11_day_destructuring_and_spreading.md
index 11625af..075e986 100644
--- a/11_Day/11_destructuring_and_spread.md
+++ b/11_Day_Destructuring_and_spreading/11_day_destructuring_and_spreading.md
@@ -1,5 +1,5 @@
-
30 Days Of JavaScript
+ 30 Days Of JavaScript: Destructuring and Spreading
@@ -13,9 +13,9 @@
-[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_Set_and_Map.md) | [Day 12>>](#)
+[<< Day 10](../10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md) | [Day 12>>](../12_Day_Regular_expressions/12_day_regular_expressions.md)
-
+
- [Day 11](#day-11)
- [Destructuring and Spread](#destructuring-and-spread)
@@ -31,7 +31,10 @@
- [Spread operator to copy array](#spread-operator-to-copy-array)
- [Spread operator to copy object](#spread-operator-to-copy-object)
- [Spread operator with arrow function](#spread-operator-with-arrow-function)
- - [Exercise](#exercise)
+ - [Exercises](#exercises)
+ - [Exercises: Level 1](#exercises-level-1)
+ - [Exercises: Level 2](#exercises-level-2)
+ - [Exercises: Level 3](#exercises-level-3)
# Day 11
@@ -526,7 +529,9 @@ console.log(sumAllNums(1, 2, 3,4,5))
🌕 You achieved quite a lot so far. Now, your level of JavaScript is upper intermediate. Keep going! You have just completed day 11 challenges and you are 11 steps a head in to your way to greatness. Now do some exercises for your brain and for your muscle.
-## Exercise
+## Exercises
+
+### Exercises: Level 1
```js
const constants = [2.72, 3.14, 9.81, 37, 100]
@@ -586,10 +591,108 @@ const users = [
1. Destructure and assign the elements of constants array to e, pi, gravity, humanBodyTemp, waterBoilingTemp.
2. Destructure and assign the elements of countries array to fin, est, sw, den, nor
3. Destructure the rectangle object by its properties or keys.
-4. Iterate through the users array and get all the keys of the object using destructuring
-5. Find the persons who have less than two skills
-6. Destructure the countries object print name, capital, population of all countries
+### Exercises: Level 2
+
+1. Iterate through the users array and get all the keys of the object using destructuring
+2. Find the persons who have less than two skills
+
+
+### Exercises: Level 3
+
+1. Destructure the countries object print name, capital, population and languages of all countries
+2. A junior developer structure student name, skills and score in array of arrays which may not easy to read. Destructure the following array name to name, skills array to skills, scores array to scores, JavaScript score to jsScore and React score to reactScore variable in one line.
+
+ ```js
+ const student = ['David', ['HTM', 'CSS', 'JS', 'React'], [98, 85, 90, 95]]
+ console.log(name, skills, jsScore, reactScore)
+ ```
+
+ ```sh
+ David (4) ["HTM", "CSS", "JS", "React"] 90 95
+ ```
+
+3. Write a function called *convertArrayToObject* which can convert the array to a structure object.
+
+ ```js
+ const students = [
+ ['David', ['HTM', 'CSS', 'JS', 'React'], [98, 85, 90, 95]],
+ ['John', ['HTM', 'CSS', 'JS', 'React'], [85, 80, 85, 80]]
+ ]
+
+ console.log(convertArrayToObject(students))
+ [
+ {
+ name: 'David',
+ skills: ['HTM','CSS','JS','React'],
+ scores: [98,85,90,95]
+ },
+ {
+ name: 'John',
+ skills: ['HTM','CSS','JS','React'],
+ scores: [85, 80,85,80]
+ }
+ ]
+ ```
+
+4. Copy the student object to newStudent without mutating the original object. In the new object add the following ?
+
+- Add Bootstrap with level 8 to the front end skill sets
+- Add Express with level 9 to the back end skill sets
+- Add SQL with level 8 to the data base skill sets
+- Add SQL without level to the data science skill sets
+
+```js
+ const student = {
+ name: 'David',
+ age: 25,
+ skills: {
+ frontEnd: [
+ { skill: 'HTML', level: 10 },
+ { skill: 'CSS', level: 8 },
+ { skill: 'JS', level: 8 },
+ { skill: 'React', level: 9 }
+ ],
+ backEnd: [
+ { skill: 'Node',level: 7 },
+ { skill: 'GraphQL', level: 8 },
+ ],
+ dataBase:[
+ { skill: 'MongoDB', level: 7.5 },
+ ],
+ dataScience:['Python', 'R', 'D3.js']
+ }
+ }
+ ```
+
+ The copied object output should look like this:
+
+```js
+ {
+ name: 'David',
+ age: 25,
+ skills: {
+ frontEnd: [
+ {skill: 'HTML',level: 10},
+ {skill: 'CSS',level: 8},
+ {skill: 'JS',level: 8},
+ {skill: 'React',level: 9},
+ {skill: 'BootStrap',level: 8}
+ ],
+ backEnd: [
+ {skill: 'Node',level: 7},
+ {skill: 'GraphQL',level: 8},
+ {skill: 'Express',level: 9}
+ ],
+ dataBase: [
+ { skill: 'MongoDB',level: 7.5},
+ { skill: 'SQL',level: 8}
+ ],
+ dataScience: ['Python','R','D3.js','SQL']
+ }
+ }
+
+```
🎉 CONGRATULATIONS ! 🎉
-[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_Set_and_Map.md) | [Day 12>>](#)
\ No newline at end of file
+[<< Day 10](../10_Day_Sets_and_Maps/10_day_Sets_and_Maps.md) | [Day 12>>](../12_Day_Regular_expressions/12_day_regular_expressions.md)
\ No newline at end of file
diff --git a/11_Day_Destructuring_and_spreading/11_day_starter/data/countries_data.js b/11_Day_Destructuring_and_spreading/11_day_starter/data/countries_data.js
new file mode 100644
index 0000000..92acddd
--- /dev/null
+++ b/11_Day_Destructuring_and_spreading/11_day_starter/data/countries_data.js
@@ -0,0 +1,2013 @@
+const countries = [
+ {
+ name: 'Afghanistan',
+ capital: 'Kabul',
+ languages: ['Pashto', 'Uzbek', 'Turkmen'],
+ population: 27657145,
+ flag: 'https://restcountries.eu/data/afg.svg',
+ currency: 'Afghan afghani'
+ },
+ {
+ name: 'Åland Islands',
+ capital: 'Mariehamn',
+ languages: ['Swedish'],
+ population: 28875,
+ flag: 'https://restcountries.eu/data/ala.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Albania',
+ capital: 'Tirana',
+ languages: ['Albanian'],
+ population: 2886026,
+ flag: 'https://restcountries.eu/data/alb.svg',
+ currency: 'Albanian lek'
+ },
+ {
+ name: 'Algeria',
+ capital: 'Algiers',
+ languages: ['Arabic'],
+ population: 40400000,
+ flag: 'https://restcountries.eu/data/dza.svg',
+ currency: 'Algerian dinar'
+ },
+ {
+ name: 'American Samoa',
+ capital: 'Pago Pago',
+ languages: ['English', 'Samoan'],
+ population: 57100,
+ flag: 'https://restcountries.eu/data/asm.svg',
+ currency: 'United State Dollar'
+ },
+ {
+ name: 'Andorra',
+ capital: 'Andorra la Vella',
+ languages: ['Catalan'],
+ population: 78014,
+ flag: 'https://restcountries.eu/data/and.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Angola',
+ capital: 'Luanda',
+ languages: ['Portuguese'],
+ population: 25868000,
+ flag: 'https://restcountries.eu/data/ago.svg',
+ currency: 'Angolan kwanza'
+ },
+ {
+ name: 'Anguilla',
+ capital: 'The Valley',
+ languages: ['English'],
+ population: 13452,
+ flag: 'https://restcountries.eu/data/aia.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Antarctica',
+ capital: '',
+ languages: ['English', 'Russian'],
+ population: 1000,
+ flag: 'https://restcountries.eu/data/ata.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Antigua and Barbuda',
+ capital: "Saint John's",
+ languages: ['English'],
+ population: 86295,
+ flag: 'https://restcountries.eu/data/atg.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Argentina',
+ capital: 'Buenos Aires',
+ languages: ['Spanish', 'Guaraní'],
+ population: 43590400,
+ flag: 'https://restcountries.eu/data/arg.svg',
+ currency: 'Argentine peso'
+ },
+ {
+ name: 'Armenia',
+ capital: 'Yerevan',
+ languages: ['Armenian', 'Russian'],
+ population: 2994400,
+ flag: 'https://restcountries.eu/data/arm.svg',
+ currency: 'Armenian dram'
+ },
+ {
+ name: 'Aruba',
+ capital: 'Oranjestad',
+ languages: ['Dutch', '(Eastern) Punjabi'],
+ population: 107394,
+ flag: 'https://restcountries.eu/data/abw.svg',
+ currency: 'Aruban florin'
+ },
+ {
+ name: 'Australia',
+ capital: 'Canberra',
+ languages: ['English'],
+ population: 24117360,
+ flag: 'https://restcountries.eu/data/aus.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Austria',
+ capital: 'Vienna',
+ languages: ['German'],
+ population: 8725931,
+ flag: 'https://restcountries.eu/data/aut.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Azerbaijan',
+ capital: 'Baku',
+ languages: ['Azerbaijani'],
+ population: 9730500,
+ flag: 'https://restcountries.eu/data/aze.svg',
+ currency: 'Azerbaijani manat'
+ },
+ {
+ name: 'Bahamas',
+ capital: 'Nassau',
+ languages: ['English'],
+ population: 378040,
+ flag: 'https://restcountries.eu/data/bhs.svg',
+ currency: 'Bahamian dollar'
+ },
+ {
+ name: 'Bahrain',
+ capital: 'Manama',
+ languages: ['Arabic'],
+ population: 1404900,
+ flag: 'https://restcountries.eu/data/bhr.svg',
+ currency: 'Bahraini dinar'
+ },
+ {
+ name: 'Bangladesh',
+ capital: 'Dhaka',
+ languages: ['Bengali'],
+ population: 161006790,
+ flag: 'https://restcountries.eu/data/bgd.svg',
+ currency: 'Bangladeshi taka'
+ },
+ {
+ name: 'Barbados',
+ capital: 'Bridgetown',
+ languages: ['English'],
+ population: 285000,
+ flag: 'https://restcountries.eu/data/brb.svg',
+ currency: 'Barbadian dollar'
+ },
+ {
+ name: 'Belarus',
+ capital: 'Minsk',
+ languages: ['Belarusian', 'Russian'],
+ population: 9498700,
+ flag: 'https://restcountries.eu/data/blr.svg',
+ currency: 'New Belarusian ruble'
+ },
+ {
+ name: 'Belgium',
+ capital: 'Brussels',
+ languages: ['Dutch', 'French', 'German'],
+ population: 11319511,
+ flag: 'https://restcountries.eu/data/bel.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Belize',
+ capital: 'Belmopan',
+ languages: ['English', 'Spanish'],
+ population: 370300,
+ flag: 'https://restcountries.eu/data/blz.svg',
+ currency: 'Belize dollar'
+ },
+ {
+ name: 'Benin',
+ capital: 'Porto-Novo',
+ languages: ['French'],
+ population: 10653654,
+ flag: 'https://restcountries.eu/data/ben.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Bermuda',
+ capital: 'Hamilton',
+ languages: ['English'],
+ population: 61954,
+ flag: 'https://restcountries.eu/data/bmu.svg',
+ currency: 'Bermudian dollar'
+ },
+ {
+ name: 'Bhutan',
+ capital: 'Thimphu',
+ languages: ['Dzongkha'],
+ population: 775620,
+ flag: 'https://restcountries.eu/data/btn.svg',
+ currency: 'Bhutanese ngultrum'
+ },
+ {
+ name: 'Bolivia (Plurinational State of)',
+ capital: 'Sucre',
+ languages: ['Spanish', 'Aymara', 'Quechua'],
+ population: 10985059,
+ flag: 'https://restcountries.eu/data/bol.svg',
+ currency: 'Bolivian boliviano'
+ },
+ {
+ name: 'Bonaire, Sint Eustatius and Saba',
+ capital: 'Kralendijk',
+ languages: ['Dutch'],
+ population: 17408,
+ flag: 'https://restcountries.eu/data/bes.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Bosnia and Herzegovina',
+ capital: 'Sarajevo',
+ languages: ['Bosnian', 'Croatian', 'Serbian'],
+ population: 3531159,
+ flag: 'https://restcountries.eu/data/bih.svg',
+ currency: 'Bosnia and Herzegovina convertible mark'
+ },
+ {
+ name: 'Botswana',
+ capital: 'Gaborone',
+ languages: ['English', 'Tswana'],
+ population: 2141206,
+ flag: 'https://restcountries.eu/data/bwa.svg',
+ currency: 'Botswana pula'
+ },
+ {
+ name: 'Bouvet Island',
+ capital: '',
+ languages: ['Norwegian', 'Norwegian Bokmål', 'Norwegian Nynorsk'],
+ population: 0,
+ flag: 'https://restcountries.eu/data/bvt.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Brazil',
+ capital: 'Brasília',
+ languages: ['Portuguese'],
+ population: 206135893,
+ flag: 'https://restcountries.eu/data/bra.svg',
+ currency: 'Brazilian real'
+ },
+ {
+ name: 'British Indian Ocean Territory',
+ capital: 'Diego Garcia',
+ languages: ['English'],
+ population: 3000,
+ flag: 'https://restcountries.eu/data/iot.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'United States Minor Outlying Islands',
+ capital: '',
+ languages: ['English'],
+ population: 300,
+ flag: 'https://restcountries.eu/data/umi.svg',
+ currency: 'United States Dollar'
+ },
+ {
+ name: 'Virgin Islands (British)',
+ capital: 'Road Town',
+ languages: ['English'],
+ population: 28514,
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+ capital: 'Washington, D.C.',
+ languages: ['English'],
+ population: 323947000,
+ flag: 'https://restcountries.eu/data/usa.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Uruguay',
+ capital: 'Montevideo',
+ languages: ['Spanish'],
+ population: 3480222,
+ flag: 'https://restcountries.eu/data/ury.svg',
+ currency: 'Uruguayan peso'
+ },
+ {
+ name: 'Uzbekistan',
+ capital: 'Tashkent',
+ languages: ['Uzbek', 'Russian'],
+ population: 31576400,
+ flag: 'https://restcountries.eu/data/uzb.svg',
+ currency: "Uzbekistani so'm"
+ },
+ {
+ name: 'Vanuatu',
+ capital: 'Port Vila',
+ languages: ['Bislama', 'English', 'French'],
+ population: 277500,
+ flag: 'https://restcountries.eu/data/vut.svg',
+ currency: 'Vanuatu vatu'
+ },
+ {
+ name: 'Venezuela (Bolivarian Republic of)',
+ capital: 'Caracas',
+ languages: ['Spanish'],
+ population: 31028700,
+ flag: 'https://restcountries.eu/data/ven.svg',
+ currency: 'Venezuelan bolívar'
+ },
+ {
+ name: 'Viet Nam',
+ capital: 'Hanoi',
+ languages: ['Vietnamese'],
+ population: 92700000,
+ flag: 'https://restcountries.eu/data/vnm.svg',
+ currency: 'Vietnamese đồng'
+ },
+ {
+ name: 'Wallis and Futuna',
+ capital: 'Mata-Utu',
+ languages: ['French'],
+ population: 11750,
+ flag: 'https://restcountries.eu/data/wlf.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'Western Sahara',
+ capital: 'El Aaiún',
+ languages: ['Spanish'],
+ population: 510713,
+ flag: 'https://restcountries.eu/data/esh.svg',
+ currency: 'Moroccan dirham'
+ },
+ {
+ name: 'Yemen',
+ capital: "Sana'a",
+ languages: ['Arabic'],
+ population: 27478000,
+ flag: 'https://restcountries.eu/data/yem.svg',
+ currency: 'Yemeni rial'
+ },
+ {
+ name: 'Zambia',
+ capital: 'Lusaka',
+ languages: ['English'],
+ population: 15933883,
+ flag: 'https://restcountries.eu/data/zmb.svg',
+ currency: 'Zambian kwacha'
+ },
+ {
+ name: 'Zimbabwe',
+ capital: 'Harare',
+ languages: ['English', 'Shona', 'Northern Ndebele'],
+ population: 14240168,
+ flag: 'https://restcountries.eu/data/zwe.svg',
+ currency: 'Botswana pula'
+ }
+]
diff --git a/11_Day_Destructuring_and_spreading/11_day_starter/index.html b/11_Day_Destructuring_and_spreading/11_day_starter/index.html
new file mode 100644
index 0000000..6efcab4
--- /dev/null
+++ b/11_Day_Destructuring_and_spreading/11_day_starter/index.html
@@ -0,0 +1,17 @@
+
+
+
+
+ 30DaysOfJavaScript:11 Day
+
+
+
+ 30DaysOfJavaScript:11 Day
+ Destructuring and Spread
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/11_Day_Destructuring_and_spreading/11_day_starter/scripts/main.js b/11_Day_Destructuring_and_spreading/11_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/11_Day_Destructuring_and_spreading/11_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/12_Day_Regular_expressions/12_day_regular_expressions.md b/12_Day_Regular_expressions/12_day_regular_expressions.md
new file mode 100644
index 0000000..99d85f0
--- /dev/null
+++ b/12_Day_Regular_expressions/12_day_regular_expressions.md
@@ -0,0 +1,524 @@
+
+
30 Days Of JavaScript: Regular Expressions
+
+
+
+
Author:
+ Asabeneh Yetayeh
+ January, 2020
+
+
30DaysOfJavaScript:11 Day
+ Destructuring and Spread
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/12_Day_Regular_expressions/12_day_starter/scripts/main.js b/12_Day_Regular_expressions/12_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/12_Day_Regular_expressions/12_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/13_Day_Console_object_methods/13_day_console_object_methods.md b/13_Day_Console_object_methods/13_day_console_object_methods.md
new file mode 100644
index 0000000..f17cf29
--- /dev/null
+++ b/13_Day_Console_object_methods/13_day_console_object_methods.md
@@ -0,0 +1,358 @@
+
+
30 Days Of JavaScript: Console Object Methods
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:13 Day
+ Console Object Methods
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/13_Day_Console_object_methods/13_day_starter/scripts/main.js b/13_Day_Console_object_methods/13_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/13_Day_Console_object_methods/13_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/14_Day_Error_handling/14_day_error_handling.md b/14_Day_Error_handling/14_day_error_handling.md
new file mode 100644
index 0000000..696db4a
--- /dev/null
+++ b/14_Day_Error_handling/14_day_error_handling.md
@@ -0,0 +1,193 @@
+
+
30 Days Of JavaScript: Error handling
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:14 Day
+ DOM
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/14_Day_Error_handling/14_day_starter/scripts/main.js b/14_Day_Error_handling/14_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/14_Day_Error_handling/14_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/15_Day_Classes/15_day_classes.md b/15_Day_Classes/15_day_classes.md
new file mode 100644
index 0000000..7b46328
--- /dev/null
+++ b/15_Day_Classes/15_day_classes.md
@@ -0,0 +1,715 @@
+
+
30 Days Of JavaScript: Classes
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:15 Day
+ Classes
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/15_Day_Classes/15_day_starter/scripts/main.js b/15_Day_Classes/15_day_starter/scripts/main.js
new file mode 100644
index 0000000..4e66495
--- /dev/null
+++ b/15_Day_Classes/15_day_starter/scripts/main.js
@@ -0,0 +1,105 @@
+
+
+class Person {
+ constructor(firstName, lastName, age, country, city) {
+ this.firstName = firstName
+ this.lastName = lastName
+ this.age = age
+ this.country = country
+ this.city = city
+ this.score = 0
+ this.skills = []
+ }
+ getFullName() {
+ const fullName = this.firstName + ' ' + this.lastName
+ return fullName
+ }
+ get getScore() {
+ return this.score
+ }
+ get getSkills() {
+ return this.skills
+ }
+ set setScore(score) {
+ this.score += score
+ }
+ set setSkill(skill) {
+ this.skills.push(skill)
+ }
+ getPersonInfo() {
+ let fullName = this.getFullName()
+ let skills =
+ this.skills.length > 0 &&
+ this.skills.slice(0, this.skills.length - 1).join(', ') +
+ ` and ${this.skills[this.skills.length - 1]}`
+
+ let formattedSkills = skills ? `He knows ${skills}` : ''
+
+ let info = `${fullName} is ${this.age}. He lives ${this.city}, ${this.country}. ${formattedSkills}`
+ console.log(this)
+ return info
+ }
+ static favoriteSkill() {
+ const skills = ['HTML', 'CSS', 'JS', 'React', 'Python', 'Node']
+ const index = Math.floor(Math.random() * skills.length)
+ console.log('hi')
+ return skills[index]
+ }
+}
+
+console.log(Person.favoriteSkill())
+
+class Student extends Person {
+ constructor(firstName, lastName, age, country, city, gender) {
+ super(firstName, lastName, age, country, city)
+ this.gender = gender
+ }
+
+ saySomething() {
+ console.log('I am a child of the person class')
+ }
+ getPersonInfo() {
+ let fullName = this.getFullName()
+ let skills =
+ this.skills.length > 0 &&
+ this.skills.slice(0, this.skills.length - 1).join(', ') +
+ ` and ${this.skills[this.skills.length - 1]}`
+
+ let formattedSkills = skills ? `He knows ${skills}` : ''
+ let pronoun = this.gender == 'Male' ? 'He' : 'She'
+
+ let info = `${fullName} is ${this.age}. ${pronoun} lives in ${this.city}, ${this.country}. ${formattedSkills}`
+ console.log(this)
+ return info
+ }
+}
+
+const s1 = new Student(
+ 'Asabeneh',
+ 'Yetayeh',
+ 250,
+ 'Finland',
+ 'Helsinki',
+ 'Male'
+)
+const s2 = new Student('Lidiya', 'Tekle', 28, 'Finland', 'Helsinki', 'Female')
+s1.setScore = 1
+s1.setSkill = 'HTML'
+s1.setSkill = 'CSS'
+s1.setSkill = 'JavaScript'
+
+s2.setScore = 1
+s2.setSkill = 'Planning'
+s2.setSkill = 'Managing'
+s2.setSkill = 'Organizing'
+
+console.log(s1)
+console.log(s2)
+
+console.log(s1.saySomething())
+console.log(s1.getFullName())
+console.log(s1.getPersonInfo())
+
+console.log(s2.saySomething())
+console.log(s2.getFullName())
+console.log(s2.getPersonInfo())
\ No newline at end of file
diff --git a/16_Day_JSON/16_day_json.md b/16_Day_JSON/16_day_json.md
new file mode 100644
index 0000000..3cdfb40
--- /dev/null
+++ b/16_Day_JSON/16_day_json.md
@@ -0,0 +1,597 @@
+
+
30 Days Of JavaScript: JSON
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:16 Day
+ JSON
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/16_Day_JSON/16_day_starter/scripts/main.js b/16_Day_JSON/16_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/16_Day_JSON/16_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/17_Day_Web_storages/17_day_starter/data/countries_data.js b/17_Day_Web_storages/17_day_starter/data/countries_data.js
new file mode 100644
index 0000000..92acddd
--- /dev/null
+++ b/17_Day_Web_storages/17_day_starter/data/countries_data.js
@@ -0,0 +1,2013 @@
+const countries = [
+ {
+ name: 'Afghanistan',
+ capital: 'Kabul',
+ languages: ['Pashto', 'Uzbek', 'Turkmen'],
+ population: 27657145,
+ flag: 'https://restcountries.eu/data/afg.svg',
+ currency: 'Afghan afghani'
+ },
+ {
+ name: 'Åland Islands',
+ capital: 'Mariehamn',
+ languages: ['Swedish'],
+ population: 28875,
+ flag: 'https://restcountries.eu/data/ala.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Albania',
+ capital: 'Tirana',
+ languages: ['Albanian'],
+ population: 2886026,
+ flag: 'https://restcountries.eu/data/alb.svg',
+ currency: 'Albanian lek'
+ },
+ {
+ name: 'Algeria',
+ capital: 'Algiers',
+ languages: ['Arabic'],
+ population: 40400000,
+ flag: 'https://restcountries.eu/data/dza.svg',
+ currency: 'Algerian dinar'
+ },
+ {
+ name: 'American Samoa',
+ capital: 'Pago Pago',
+ languages: ['English', 'Samoan'],
+ population: 57100,
+ flag: 'https://restcountries.eu/data/asm.svg',
+ currency: 'United State Dollar'
+ },
+ {
+ name: 'Andorra',
+ capital: 'Andorra la Vella',
+ languages: ['Catalan'],
+ population: 78014,
+ flag: 'https://restcountries.eu/data/and.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Angola',
+ capital: 'Luanda',
+ languages: ['Portuguese'],
+ population: 25868000,
+ flag: 'https://restcountries.eu/data/ago.svg',
+ currency: 'Angolan kwanza'
+ },
+ {
+ name: 'Anguilla',
+ capital: 'The Valley',
+ languages: ['English'],
+ population: 13452,
+ flag: 'https://restcountries.eu/data/aia.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Antarctica',
+ capital: '',
+ languages: ['English', 'Russian'],
+ population: 1000,
+ flag: 'https://restcountries.eu/data/ata.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Antigua and Barbuda',
+ capital: "Saint John's",
+ languages: ['English'],
+ population: 86295,
+ flag: 'https://restcountries.eu/data/atg.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Argentina',
+ capital: 'Buenos Aires',
+ languages: ['Spanish', 'Guaraní'],
+ population: 43590400,
+ flag: 'https://restcountries.eu/data/arg.svg',
+ currency: 'Argentine peso'
+ },
+ {
+ name: 'Armenia',
+ capital: 'Yerevan',
+ languages: ['Armenian', 'Russian'],
+ population: 2994400,
+ flag: 'https://restcountries.eu/data/arm.svg',
+ currency: 'Armenian dram'
+ },
+ {
+ name: 'Aruba',
+ capital: 'Oranjestad',
+ languages: ['Dutch', '(Eastern) Punjabi'],
+ population: 107394,
+ flag: 'https://restcountries.eu/data/abw.svg',
+ currency: 'Aruban florin'
+ },
+ {
+ name: 'Australia',
+ capital: 'Canberra',
+ languages: ['English'],
+ population: 24117360,
+ flag: 'https://restcountries.eu/data/aus.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Austria',
+ capital: 'Vienna',
+ languages: ['German'],
+ population: 8725931,
+ flag: 'https://restcountries.eu/data/aut.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Azerbaijan',
+ capital: 'Baku',
+ languages: ['Azerbaijani'],
+ population: 9730500,
+ flag: 'https://restcountries.eu/data/aze.svg',
+ currency: 'Azerbaijani manat'
+ },
+ {
+ name: 'Bahamas',
+ capital: 'Nassau',
+ languages: ['English'],
+ population: 378040,
+ flag: 'https://restcountries.eu/data/bhs.svg',
+ currency: 'Bahamian dollar'
+ },
+ {
+ name: 'Bahrain',
+ capital: 'Manama',
+ languages: ['Arabic'],
+ population: 1404900,
+ flag: 'https://restcountries.eu/data/bhr.svg',
+ currency: 'Bahraini dinar'
+ },
+ {
+ name: 'Bangladesh',
+ capital: 'Dhaka',
+ languages: ['Bengali'],
+ population: 161006790,
+ flag: 'https://restcountries.eu/data/bgd.svg',
+ currency: 'Bangladeshi taka'
+ },
+ {
+ name: 'Barbados',
+ capital: 'Bridgetown',
+ languages: ['English'],
+ population: 285000,
+ flag: 'https://restcountries.eu/data/brb.svg',
+ currency: 'Barbadian dollar'
+ },
+ {
+ name: 'Belarus',
+ capital: 'Minsk',
+ languages: ['Belarusian', 'Russian'],
+ population: 9498700,
+ flag: 'https://restcountries.eu/data/blr.svg',
+ currency: 'New Belarusian ruble'
+ },
+ {
+ name: 'Belgium',
+ capital: 'Brussels',
+ languages: ['Dutch', 'French', 'German'],
+ population: 11319511,
+ flag: 'https://restcountries.eu/data/bel.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Belize',
+ capital: 'Belmopan',
+ languages: ['English', 'Spanish'],
+ population: 370300,
+ flag: 'https://restcountries.eu/data/blz.svg',
+ currency: 'Belize dollar'
+ },
+ {
+ name: 'Benin',
+ capital: 'Porto-Novo',
+ languages: ['French'],
+ population: 10653654,
+ flag: 'https://restcountries.eu/data/ben.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Bermuda',
+ capital: 'Hamilton',
+ languages: ['English'],
+ population: 61954,
+ flag: 'https://restcountries.eu/data/bmu.svg',
+ currency: 'Bermudian dollar'
+ },
+ {
+ name: 'Bhutan',
+ capital: 'Thimphu',
+ languages: ['Dzongkha'],
+ population: 775620,
+ flag: 'https://restcountries.eu/data/btn.svg',
+ currency: 'Bhutanese ngultrum'
+ },
+ {
+ name: 'Bolivia (Plurinational State of)',
+ capital: 'Sucre',
+ languages: ['Spanish', 'Aymara', 'Quechua'],
+ population: 10985059,
+ flag: 'https://restcountries.eu/data/bol.svg',
+ currency: 'Bolivian boliviano'
+ },
+ {
+ name: 'Bonaire, Sint Eustatius and Saba',
+ capital: 'Kralendijk',
+ languages: ['Dutch'],
+ population: 17408,
+ flag: 'https://restcountries.eu/data/bes.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Bosnia and Herzegovina',
+ capital: 'Sarajevo',
+ languages: ['Bosnian', 'Croatian', 'Serbian'],
+ population: 3531159,
+ flag: 'https://restcountries.eu/data/bih.svg',
+ currency: 'Bosnia and Herzegovina convertible mark'
+ },
+ {
+ name: 'Botswana',
+ capital: 'Gaborone',
+ languages: ['English', 'Tswana'],
+ population: 2141206,
+ flag: 'https://restcountries.eu/data/bwa.svg',
+ currency: 'Botswana pula'
+ },
+ {
+ name: 'Bouvet Island',
+ capital: '',
+ languages: ['Norwegian', 'Norwegian Bokmål', 'Norwegian Nynorsk'],
+ population: 0,
+ flag: 'https://restcountries.eu/data/bvt.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Brazil',
+ capital: 'Brasília',
+ languages: ['Portuguese'],
+ population: 206135893,
+ flag: 'https://restcountries.eu/data/bra.svg',
+ currency: 'Brazilian real'
+ },
+ {
+ name: 'British Indian Ocean Territory',
+ capital: 'Diego Garcia',
+ languages: ['English'],
+ population: 3000,
+ flag: 'https://restcountries.eu/data/iot.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'United States Minor Outlying Islands',
+ capital: '',
+ languages: ['English'],
+ population: 300,
+ flag: 'https://restcountries.eu/data/umi.svg',
+ currency: 'United States Dollar'
+ },
+ {
+ name: 'Virgin Islands (British)',
+ capital: 'Road Town',
+ languages: ['English'],
+ population: 28514,
+ flag: 'https://restcountries.eu/data/vgb.svg',
+ currency: '[D]'
+ },
+ {
+ name: 'Virgin Islands (U.S.)',
+ capital: 'Charlotte Amalie',
+ languages: ['English'],
+ population: 114743,
+ flag: 'https://restcountries.eu/data/vir.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Brunei Darussalam',
+ capital: 'Bandar Seri Begawan',
+ languages: ['Malay'],
+ population: 411900,
+ flag: 'https://restcountries.eu/data/brn.svg',
+ currency: 'Brunei dollar'
+ },
+ {
+ name: 'Bulgaria',
+ capital: 'Sofia',
+ languages: ['Bulgarian'],
+ population: 7153784,
+ flag: 'https://restcountries.eu/data/bgr.svg',
+ currency: 'Bulgarian lev'
+ },
+ {
+ name: 'Burkina Faso',
+ capital: 'Ouagadougou',
+ languages: ['French', 'Fula'],
+ population: 19034397,
+ flag: 'https://restcountries.eu/data/bfa.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Burundi',
+ capital: 'Bujumbura',
+ languages: ['French', 'Kirundi'],
+ population: 10114505,
+ flag: 'https://restcountries.eu/data/bdi.svg',
+ currency: 'Burundian franc'
+ },
+ {
+ name: 'Cambodia',
+ capital: 'Phnom Penh',
+ languages: ['Khmer'],
+ population: 15626444,
+ flag: 'https://restcountries.eu/data/khm.svg',
+ currency: 'Cambodian riel'
+ },
+ {
+ name: 'Cameroon',
+ capital: 'Yaoundé',
+ languages: ['English', 'French'],
+ population: 22709892,
+ flag: 'https://restcountries.eu/data/cmr.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Canada',
+ capital: 'Ottawa',
+ languages: ['English', 'French'],
+ population: 36155487,
+ flag: 'https://restcountries.eu/data/can.svg',
+ currency: 'Canadian dollar'
+ },
+ {
+ name: 'Cabo Verde',
+ capital: 'Praia',
+ languages: ['Portuguese'],
+ population: 531239,
+ flag: 'https://restcountries.eu/data/cpv.svg',
+ currency: 'Cape Verdean escudo'
+ },
+ {
+ name: 'Cayman Islands',
+ capital: 'George Town',
+ languages: ['English'],
+ population: 58238,
+ flag: 'https://restcountries.eu/data/cym.svg',
+ currency: 'Cayman Islands dollar'
+ },
+ {
+ name: 'Central African Republic',
+ capital: 'Bangui',
+ languages: ['French', 'Sango'],
+ population: 4998000,
+ flag: 'https://restcountries.eu/data/caf.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Chad',
+ capital: "N'Djamena",
+ languages: ['French', 'Arabic'],
+ population: 14497000,
+ flag: 'https://restcountries.eu/data/tcd.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Chile',
+ capital: 'Santiago',
+ languages: ['Spanish'],
+ population: 18191900,
+ flag: 'https://restcountries.eu/data/chl.svg',
+ currency: 'Chilean peso'
+ },
+ {
+ name: 'China',
+ capital: 'Beijing',
+ languages: ['Chinese'],
+ population: 1377422166,
+ flag: 'https://restcountries.eu/data/chn.svg',
+ currency: 'Chinese yuan'
+ },
+ {
+ name: 'Christmas Island',
+ capital: 'Flying Fish Cove',
+ languages: ['English'],
+ population: 2072,
+ flag: 'https://restcountries.eu/data/cxr.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Cocos (Keeling) Islands',
+ capital: 'West Island',
+ languages: ['English'],
+ population: 550,
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+ flag: 'https://restcountries.eu/data/mmr.svg',
+ currency: 'Burmese kyat'
+ },
+ {
+ name: 'Namibia',
+ capital: 'Windhoek',
+ languages: ['English', 'Afrikaans'],
+ population: 2324388,
+ flag: 'https://restcountries.eu/data/nam.svg',
+ currency: 'Namibian dollar'
+ },
+ {
+ name: 'Nauru',
+ capital: 'Yaren',
+ languages: ['English', 'Nauruan'],
+ population: 10084,
+ flag: 'https://restcountries.eu/data/nru.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Nepal',
+ capital: 'Kathmandu',
+ languages: ['Nepali'],
+ population: 28431500,
+ flag: 'https://restcountries.eu/data/npl.svg',
+ currency: 'Nepalese rupee'
+ },
+ {
+ name: 'Netherlands',
+ capital: 'Amsterdam',
+ languages: ['Dutch'],
+ population: 17019800,
+ flag: 'https://restcountries.eu/data/nld.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'New Caledonia',
+ capital: 'Nouméa',
+ languages: ['French'],
+ population: 268767,
+ flag: 'https://restcountries.eu/data/ncl.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'New Zealand',
+ capital: 'Wellington',
+ languages: ['English', 'Māori'],
+ population: 4697854,
+ flag: 'https://restcountries.eu/data/nzl.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Nicaragua',
+ capital: 'Managua',
+ languages: ['Spanish'],
+ population: 6262703,
+ flag: 'https://restcountries.eu/data/nic.svg',
+ currency: 'Nicaraguan córdoba'
+ },
+ {
+ name: 'Niger',
+ capital: 'Niamey',
+ languages: ['French'],
+ population: 20715000,
+ flag: 'https://restcountries.eu/data/ner.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Nigeria',
+ capital: 'Abuja',
+ languages: ['English'],
+ population: 186988000,
+ flag: 'https://restcountries.eu/data/nga.svg',
+ currency: 'Nigerian naira'
+ },
+ {
+ name: 'Niue',
+ capital: 'Alofi',
+ languages: ['English'],
+ population: 1470,
+ flag: 'https://restcountries.eu/data/niu.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Norfolk Island',
+ capital: 'Kingston',
+ languages: ['English'],
+ population: 2302,
+ flag: 'https://restcountries.eu/data/nfk.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: "Korea (Democratic People's Republic of)",
+ capital: 'Pyongyang',
+ languages: ['Korean'],
+ population: 25281000,
+ flag: 'https://restcountries.eu/data/prk.svg',
+ currency: 'North Korean won'
+ },
+ {
+ name: 'Northern Mariana Islands',
+ capital: 'Saipan',
+ languages: ['English', 'Chamorro'],
+ population: 56940,
+ flag: 'https://restcountries.eu/data/mnp.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Norway',
+ capital: 'Oslo',
+ languages: ['Norwegian', 'Norwegian Bokmål', 'Norwegian Nynorsk'],
+ population: 5223256,
+ flag: 'https://restcountries.eu/data/nor.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Oman',
+ capital: 'Muscat',
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+ population: 4420133,
+ flag: 'https://restcountries.eu/data/omn.svg',
+ currency: 'Omani rial'
+ },
+ {
+ name: 'Pakistan',
+ capital: 'Islamabad',
+ languages: ['English', 'Urdu'],
+ population: 194125062,
+ flag: 'https://restcountries.eu/data/pak.svg',
+ currency: 'Pakistani rupee'
+ },
+ {
+ name: 'Palau',
+ capital: 'Ngerulmud',
+ languages: ['English'],
+ population: 17950,
+ flag: 'https://restcountries.eu/data/plw.svg',
+ currency: '[E]'
+ },
+ {
+ name: 'Palestine, State of',
+ capital: 'Ramallah',
+ languages: ['Arabic'],
+ population: 4682467,
+ flag: 'https://restcountries.eu/data/pse.svg',
+ currency: 'Israeli new sheqel'
+ },
+ {
+ name: 'Panama',
+ capital: 'Panama City',
+ languages: ['Spanish'],
+ population: 3814672,
+ flag: 'https://restcountries.eu/data/pan.svg',
+ currency: 'Panamanian balboa'
+ },
+ {
+ name: 'Papua New Guinea',
+ capital: 'Port Moresby',
+ languages: ['English'],
+ population: 8083700,
+ flag: 'https://restcountries.eu/data/png.svg',
+ currency: 'Papua New Guinean kina'
+ },
+ {
+ name: 'Paraguay',
+ capital: 'Asunción',
+ languages: ['Spanish', 'Guaraní'],
+ population: 6854536,
+ flag: 'https://restcountries.eu/data/pry.svg',
+ currency: 'Paraguayan guaraní'
+ },
+ {
+ name: 'Peru',
+ capital: 'Lima',
+ languages: ['Spanish'],
+ population: 31488700,
+ flag: 'https://restcountries.eu/data/per.svg',
+ currency: 'Peruvian sol'
+ },
+ {
+ name: 'Philippines',
+ capital: 'Manila',
+ languages: ['English'],
+ population: 103279800,
+ flag: 'https://restcountries.eu/data/phl.svg',
+ currency: 'Philippine peso'
+ },
+ {
+ name: 'Pitcairn',
+ capital: 'Adamstown',
+ languages: ['English'],
+ population: 56,
+ flag: 'https://restcountries.eu/data/pcn.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Poland',
+ capital: 'Warsaw',
+ languages: ['Polish'],
+ population: 38437239,
+ flag: 'https://restcountries.eu/data/pol.svg',
+ currency: 'Polish złoty'
+ },
+ {
+ name: 'Portugal',
+ capital: 'Lisbon',
+ languages: ['Portuguese'],
+ population: 10374822,
+ flag: 'https://restcountries.eu/data/prt.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Puerto Rico',
+ capital: 'San Juan',
+ languages: ['Spanish', 'English'],
+ population: 3474182,
+ flag: 'https://restcountries.eu/data/pri.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Qatar',
+ capital: 'Doha',
+ languages: ['Arabic'],
+ population: 2587564,
+ flag: 'https://restcountries.eu/data/qat.svg',
+ currency: 'Qatari riyal'
+ },
+ {
+ name: 'Republic of Kosovo',
+ capital: 'Pristina',
+ languages: ['Albanian', 'Serbian'],
+ population: 1733842,
+ flag: 'https://restcountries.eu/data/kos.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Réunion',
+ capital: 'Saint-Denis',
+ languages: ['French'],
+ population: 840974,
+ flag: 'https://restcountries.eu/data/reu.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Romania',
+ capital: 'Bucharest',
+ languages: ['Romanian'],
+ population: 19861408,
+ flag: 'https://restcountries.eu/data/rou.svg',
+ currency: 'Romanian leu'
+ },
+ {
+ name: 'Russian Federation',
+ capital: 'Moscow',
+ languages: ['Russian'],
+ population: 146599183,
+ flag: 'https://restcountries.eu/data/rus.svg',
+ currency: 'Russian ruble'
+ },
+ {
+ name: 'Rwanda',
+ capital: 'Kigali',
+ languages: ['Kinyarwanda', 'English', 'French'],
+ population: 11553188,
+ flag: 'https://restcountries.eu/data/rwa.svg',
+ currency: 'Rwandan franc'
+ },
+ {
+ name: 'Saint Barthélemy',
+ capital: 'Gustavia',
+ languages: ['French'],
+ population: 9417,
+ flag: 'https://restcountries.eu/data/blm.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Saint Helena, Ascension and Tristan da Cunha',
+ capital: 'Jamestown',
+ languages: ['English'],
+ population: 4255,
+ flag: 'https://restcountries.eu/data/shn.svg',
+ currency: 'Saint Helena pound'
+ },
+ {
+ name: 'Saint Kitts and Nevis',
+ capital: 'Basseterre',
+ languages: ['English'],
+ population: 46204,
+ flag: 'https://restcountries.eu/data/kna.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Saint Lucia',
+ capital: 'Castries',
+ languages: ['English'],
+ population: 186000,
+ flag: 'https://restcountries.eu/data/lca.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Saint Martin (French part)',
+ capital: 'Marigot',
+ languages: ['English', 'French', 'Dutch'],
+ population: 36979,
+ flag: 'https://restcountries.eu/data/maf.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Saint Pierre and Miquelon',
+ capital: 'Saint-Pierre',
+ languages: ['French'],
+ population: 6069,
+ flag: 'https://restcountries.eu/data/spm.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Saint Vincent and the Grenadines',
+ capital: 'Kingstown',
+ languages: ['English'],
+ population: 109991,
+ flag: 'https://restcountries.eu/data/vct.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Samoa',
+ capital: 'Apia',
+ languages: ['Samoan', 'English'],
+ population: 194899,
+ flag: 'https://restcountries.eu/data/wsm.svg',
+ currency: 'Samoan tālā'
+ },
+ {
+ name: 'San Marino',
+ capital: 'City of San Marino',
+ languages: ['Italian'],
+ population: 33005,
+ flag: 'https://restcountries.eu/data/smr.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Sao Tome and Principe',
+ capital: 'São Tomé',
+ languages: ['Portuguese'],
+ population: 187356,
+ flag: 'https://restcountries.eu/data/stp.svg',
+ currency: 'São Tomé and Príncipe dobra'
+ },
+ {
+ name: 'Saudi Arabia',
+ capital: 'Riyadh',
+ languages: ['Arabic'],
+ population: 32248200,
+ flag: 'https://restcountries.eu/data/sau.svg',
+ currency: 'Saudi riyal'
+ },
+ {
+ name: 'Senegal',
+ capital: 'Dakar',
+ languages: ['French'],
+ population: 14799859,
+ flag: 'https://restcountries.eu/data/sen.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Serbia',
+ capital: 'Belgrade',
+ languages: ['Serbian'],
+ population: 7076372,
+ flag: 'https://restcountries.eu/data/srb.svg',
+ currency: 'Serbian dinar'
+ },
+ {
+ name: 'Seychelles',
+ capital: 'Victoria',
+ languages: ['French', 'English'],
+ population: 91400,
+ flag: 'https://restcountries.eu/data/syc.svg',
+ currency: 'Seychellois rupee'
+ },
+ {
+ name: 'Sierra Leone',
+ capital: 'Freetown',
+ languages: ['English'],
+ population: 7075641,
+ flag: 'https://restcountries.eu/data/sle.svg',
+ currency: 'Sierra Leonean leone'
+ },
+ {
+ name: 'Singapore',
+ capital: 'Singapore',
+ languages: ['English', 'Malay', 'Tamil', 'Chinese'],
+ population: 5535000,
+ flag: 'https://restcountries.eu/data/sgp.svg',
+ currency: 'Brunei dollar'
+ },
+ {
+ name: 'Sint Maarten (Dutch part)',
+ capital: 'Philipsburg',
+ languages: ['Dutch', 'English'],
+ population: 38247,
+ flag: 'https://restcountries.eu/data/sxm.svg',
+ currency: 'Netherlands Antillean guilder'
+ },
+ {
+ name: 'Slovakia',
+ capital: 'Bratislava',
+ languages: ['Slovak'],
+ population: 5426252,
+ flag: 'https://restcountries.eu/data/svk.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Slovenia',
+ capital: 'Ljubljana',
+ languages: ['Slovene'],
+ population: 2064188,
+ flag: 'https://restcountries.eu/data/svn.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Solomon Islands',
+ capital: 'Honiara',
+ languages: ['English'],
+ population: 642000,
+ flag: 'https://restcountries.eu/data/slb.svg',
+ currency: 'Solomon Islands dollar'
+ },
+ {
+ name: 'Somalia',
+ capital: 'Mogadishu',
+ languages: ['Somali', 'Arabic'],
+ population: 11079000,
+ flag: 'https://restcountries.eu/data/som.svg',
+ currency: 'Somali shilling'
+ },
+ {
+ name: 'South Africa',
+ capital: 'Pretoria',
+ languages: [
+ 'Afrikaans',
+ 'English',
+ 'Southern Ndebele',
+ 'Southern Sotho',
+ 'Swati',
+ 'Tswana',
+ 'Tsonga',
+ 'Venda',
+ 'Xhosa',
+ 'Zulu'
+ ],
+ population: 55653654,
+ flag: 'https://restcountries.eu/data/zaf.svg',
+ currency: 'South African rand'
+ },
+ {
+ name: 'South Georgia and the South Sandwich Islands',
+ capital: 'King Edward Point',
+ languages: ['English'],
+ population: 30,
+ flag: 'https://restcountries.eu/data/sgs.svg',
+ currency: 'British pound'
+ },
+ {
+ name: 'Korea (Republic of)',
+ capital: 'Seoul',
+ languages: ['Korean'],
+ population: 50801405,
+ flag: 'https://restcountries.eu/data/kor.svg',
+ currency: 'South Korean won'
+ },
+ {
+ name: 'South Sudan',
+ capital: 'Juba',
+ languages: ['English'],
+ population: 12131000,
+ flag: 'https://restcountries.eu/data/ssd.svg',
+ currency: 'South Sudanese pound'
+ },
+ {
+ name: 'Spain',
+ capital: 'Madrid',
+ languages: ['Spanish'],
+ population: 46438422,
+ flag: 'https://restcountries.eu/data/esp.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Sri Lanka',
+ capital: 'Colombo',
+ languages: ['Sinhalese', 'Tamil'],
+ population: 20966000,
+ flag: 'https://restcountries.eu/data/lka.svg',
+ currency: 'Sri Lankan rupee'
+ },
+ {
+ name: 'Sudan',
+ capital: 'Khartoum',
+ languages: ['Arabic', 'English'],
+ population: 39598700,
+ flag: 'https://restcountries.eu/data/sdn.svg',
+ currency: 'Sudanese pound'
+ },
+ {
+ name: 'Suriname',
+ capital: 'Paramaribo',
+ languages: ['Dutch'],
+ population: 541638,
+ flag: 'https://restcountries.eu/data/sur.svg',
+ currency: 'Surinamese dollar'
+ },
+ {
+ name: 'Svalbard and Jan Mayen',
+ capital: 'Longyearbyen',
+ languages: ['Norwegian'],
+ population: 2562,
+ flag: 'https://restcountries.eu/data/sjm.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Swaziland',
+ capital: 'Lobamba',
+ languages: ['English', 'Swati'],
+ population: 1132657,
+ flag: 'https://restcountries.eu/data/swz.svg',
+ currency: 'Swazi lilangeni'
+ },
+ {
+ name: 'Sweden',
+ capital: 'Stockholm',
+ languages: ['Swedish'],
+ population: 9894888,
+ flag: 'https://restcountries.eu/data/swe.svg',
+ currency: 'Swedish krona'
+ },
+ {
+ name: 'Switzerland',
+ capital: 'Bern',
+ languages: ['German', 'French', 'Italian'],
+ population: 8341600,
+ flag: 'https://restcountries.eu/data/che.svg',
+ currency: 'Swiss franc'
+ },
+ {
+ name: 'Syrian Arab Republic',
+ capital: 'Damascus',
+ languages: ['Arabic'],
+ population: 18564000,
+ flag: 'https://restcountries.eu/data/syr.svg',
+ currency: 'Syrian pound'
+ },
+ {
+ name: 'Taiwan',
+ capital: 'Taipei',
+ languages: ['Chinese'],
+ population: 23503349,
+ flag: 'https://restcountries.eu/data/twn.svg',
+ currency: 'New Taiwan dollar'
+ },
+ {
+ name: 'Tajikistan',
+ capital: 'Dushanbe',
+ languages: ['Tajik', 'Russian'],
+ population: 8593600,
+ flag: 'https://restcountries.eu/data/tjk.svg',
+ currency: 'Tajikistani somoni'
+ },
+ {
+ name: 'Tanzania, United Republic of',
+ capital: 'Dodoma',
+ languages: ['Swahili', 'English'],
+ population: 55155000,
+ flag: 'https://restcountries.eu/data/tza.svg',
+ currency: 'Tanzanian shilling'
+ },
+ {
+ name: 'Thailand',
+ capital: 'Bangkok',
+ languages: ['Thai'],
+ population: 65327652,
+ flag: 'https://restcountries.eu/data/tha.svg',
+ currency: 'Thai baht'
+ },
+ {
+ name: 'Timor-Leste',
+ capital: 'Dili',
+ languages: ['Portuguese'],
+ population: 1167242,
+ flag: 'https://restcountries.eu/data/tls.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Togo',
+ capital: 'Lomé',
+ languages: ['French'],
+ population: 7143000,
+ flag: 'https://restcountries.eu/data/tgo.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Tokelau',
+ capital: 'Fakaofo',
+ languages: ['English'],
+ population: 1411,
+ flag: 'https://restcountries.eu/data/tkl.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Tonga',
+ capital: "Nuku'alofa",
+ languages: ['English', 'Tonga (Tonga Islands)'],
+ population: 103252,
+ flag: 'https://restcountries.eu/data/ton.svg',
+ currency: 'Tongan paʻanga'
+ },
+ {
+ name: 'Trinidad and Tobago',
+ capital: 'Port of Spain',
+ languages: ['English'],
+ population: 1349667,
+ flag: 'https://restcountries.eu/data/tto.svg',
+ currency: 'Trinidad and Tobago dollar'
+ },
+ {
+ name: 'Tunisia',
+ capital: 'Tunis',
+ languages: ['Arabic'],
+ population: 11154400,
+ flag: 'https://restcountries.eu/data/tun.svg',
+ currency: 'Tunisian dinar'
+ },
+ {
+ name: 'Turkey',
+ capital: 'Ankara',
+ languages: ['Turkish'],
+ population: 78741053,
+ flag: 'https://restcountries.eu/data/tur.svg',
+ currency: 'Turkish lira'
+ },
+ {
+ name: 'Turkmenistan',
+ capital: 'Ashgabat',
+ languages: ['Turkmen', 'Russian'],
+ population: 4751120,
+ flag: 'https://restcountries.eu/data/tkm.svg',
+ currency: 'Turkmenistan manat'
+ },
+ {
+ name: 'Turks and Caicos Islands',
+ capital: 'Cockburn Town',
+ languages: ['English'],
+ population: 31458,
+ flag: 'https://restcountries.eu/data/tca.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Tuvalu',
+ capital: 'Funafuti',
+ languages: ['English'],
+ population: 10640,
+ flag: 'https://restcountries.eu/data/tuv.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Uganda',
+ capital: 'Kampala',
+ languages: ['English', 'Swahili'],
+ population: 33860700,
+ flag: 'https://restcountries.eu/data/uga.svg',
+ currency: 'Ugandan shilling'
+ },
+ {
+ name: 'Ukraine',
+ capital: 'Kiev',
+ languages: ['Ukrainian'],
+ population: 42692393,
+ flag: 'https://restcountries.eu/data/ukr.svg',
+ currency: 'Ukrainian hryvnia'
+ },
+ {
+ name: 'United Arab Emirates',
+ capital: 'Abu Dhabi',
+ languages: ['Arabic'],
+ population: 9856000,
+ flag: 'https://restcountries.eu/data/are.svg',
+ currency: 'United Arab Emirates dirham'
+ },
+ {
+ name: 'United Kingdom of Great Britain and Northern Ireland',
+ capital: 'London',
+ languages: ['English'],
+ population: 65110000,
+ flag: 'https://restcountries.eu/data/gbr.svg',
+ currency: 'British pound'
+ },
+ {
+ name: 'United States of America',
+ capital: 'Washington, D.C.',
+ languages: ['English'],
+ population: 323947000,
+ flag: 'https://restcountries.eu/data/usa.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Uruguay',
+ capital: 'Montevideo',
+ languages: ['Spanish'],
+ population: 3480222,
+ flag: 'https://restcountries.eu/data/ury.svg',
+ currency: 'Uruguayan peso'
+ },
+ {
+ name: 'Uzbekistan',
+ capital: 'Tashkent',
+ languages: ['Uzbek', 'Russian'],
+ population: 31576400,
+ flag: 'https://restcountries.eu/data/uzb.svg',
+ currency: "Uzbekistani so'm"
+ },
+ {
+ name: 'Vanuatu',
+ capital: 'Port Vila',
+ languages: ['Bislama', 'English', 'French'],
+ population: 277500,
+ flag: 'https://restcountries.eu/data/vut.svg',
+ currency: 'Vanuatu vatu'
+ },
+ {
+ name: 'Venezuela (Bolivarian Republic of)',
+ capital: 'Caracas',
+ languages: ['Spanish'],
+ population: 31028700,
+ flag: 'https://restcountries.eu/data/ven.svg',
+ currency: 'Venezuelan bolívar'
+ },
+ {
+ name: 'Viet Nam',
+ capital: 'Hanoi',
+ languages: ['Vietnamese'],
+ population: 92700000,
+ flag: 'https://restcountries.eu/data/vnm.svg',
+ currency: 'Vietnamese đồng'
+ },
+ {
+ name: 'Wallis and Futuna',
+ capital: 'Mata-Utu',
+ languages: ['French'],
+ population: 11750,
+ flag: 'https://restcountries.eu/data/wlf.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'Western Sahara',
+ capital: 'El Aaiún',
+ languages: ['Spanish'],
+ population: 510713,
+ flag: 'https://restcountries.eu/data/esh.svg',
+ currency: 'Moroccan dirham'
+ },
+ {
+ name: 'Yemen',
+ capital: "Sana'a",
+ languages: ['Arabic'],
+ population: 27478000,
+ flag: 'https://restcountries.eu/data/yem.svg',
+ currency: 'Yemeni rial'
+ },
+ {
+ name: 'Zambia',
+ capital: 'Lusaka',
+ languages: ['English'],
+ population: 15933883,
+ flag: 'https://restcountries.eu/data/zmb.svg',
+ currency: 'Zambian kwacha'
+ },
+ {
+ name: 'Zimbabwe',
+ capital: 'Harare',
+ languages: ['English', 'Shona', 'Northern Ndebele'],
+ population: 14240168,
+ flag: 'https://restcountries.eu/data/zwe.svg',
+ currency: 'Botswana pula'
+ }
+]
diff --git a/17_Day_Web_storages/17_day_starter/index.html b/17_Day_Web_storages/17_day_starter/index.html
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--- /dev/null
+++ b/17_Day_Web_storages/17_day_starter/index.html
@@ -0,0 +1,16 @@
+
+
+
+
+ 30DaysOfJavaScript:17 Day
+
+
+
+ 30DaysOfJavaScript:17 Day
+ Web Storage
+
+
+
+
+
+
\ No newline at end of file
diff --git a/17_Day_Web_storages/17_day_starter/scripts/main.js b/17_Day_Web_storages/17_day_starter/scripts/main.js
new file mode 100644
index 0000000..e69de29
diff --git a/17_Day_Web_storages/17_day_web_storages.md b/17_Day_Web_storages/17_day_web_storages.md
new file mode 100644
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--- /dev/null
+++ b/17_Day_Web_storages/17_day_web_storages.md
@@ -0,0 +1,233 @@
+
+
30 Days Of JavaScript: Web Storages
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
+
30 Days Of JavaScript: Promises
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:18 Day
+ Promises
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/18_Day_Promises/18_day_starter/scripts/main.js b/18_Day_Promises/18_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/18_Day_Promises/18_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/19_Day_Closures/19_day_closures.md b/19_Day_Closures/19_day_closures.md
new file mode 100644
index 0000000..4c96016
--- /dev/null
+++ b/19_Day_Closures/19_day_closures.md
@@ -0,0 +1,104 @@
+
+
30 Days Of JavaScript: Closures
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
30DaysOfJavaScript:19 Day
+ Writing Clean Code
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/19_Day_Closures/19_day_starter/scripts/main.js b/19_Day_Closures/19_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/19_Day_Closures/19_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/20_Day_Writing_clean_codes/20_day_starter/data/countries_data.js b/20_Day_Writing_clean_codes/20_day_starter/data/countries_data.js
new file mode 100644
index 0000000..92acddd
--- /dev/null
+++ b/20_Day_Writing_clean_codes/20_day_starter/data/countries_data.js
@@ -0,0 +1,2013 @@
+const countries = [
+ {
+ name: 'Afghanistan',
+ capital: 'Kabul',
+ languages: ['Pashto', 'Uzbek', 'Turkmen'],
+ population: 27657145,
+ flag: 'https://restcountries.eu/data/afg.svg',
+ currency: 'Afghan afghani'
+ },
+ {
+ name: 'Åland Islands',
+ capital: 'Mariehamn',
+ languages: ['Swedish'],
+ population: 28875,
+ flag: 'https://restcountries.eu/data/ala.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Albania',
+ capital: 'Tirana',
+ languages: ['Albanian'],
+ population: 2886026,
+ flag: 'https://restcountries.eu/data/alb.svg',
+ currency: 'Albanian lek'
+ },
+ {
+ name: 'Algeria',
+ capital: 'Algiers',
+ languages: ['Arabic'],
+ population: 40400000,
+ flag: 'https://restcountries.eu/data/dza.svg',
+ currency: 'Algerian dinar'
+ },
+ {
+ name: 'American Samoa',
+ capital: 'Pago Pago',
+ languages: ['English', 'Samoan'],
+ population: 57100,
+ flag: 'https://restcountries.eu/data/asm.svg',
+ currency: 'United State Dollar'
+ },
+ {
+ name: 'Andorra',
+ capital: 'Andorra la Vella',
+ languages: ['Catalan'],
+ population: 78014,
+ flag: 'https://restcountries.eu/data/and.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Angola',
+ capital: 'Luanda',
+ languages: ['Portuguese'],
+ population: 25868000,
+ flag: 'https://restcountries.eu/data/ago.svg',
+ currency: 'Angolan kwanza'
+ },
+ {
+ name: 'Anguilla',
+ capital: 'The Valley',
+ languages: ['English'],
+ population: 13452,
+ flag: 'https://restcountries.eu/data/aia.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Antarctica',
+ capital: '',
+ languages: ['English', 'Russian'],
+ population: 1000,
+ flag: 'https://restcountries.eu/data/ata.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Antigua and Barbuda',
+ capital: "Saint John's",
+ languages: ['English'],
+ population: 86295,
+ flag: 'https://restcountries.eu/data/atg.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Argentina',
+ capital: 'Buenos Aires',
+ languages: ['Spanish', 'Guaraní'],
+ population: 43590400,
+ flag: 'https://restcountries.eu/data/arg.svg',
+ currency: 'Argentine peso'
+ },
+ {
+ name: 'Armenia',
+ capital: 'Yerevan',
+ languages: ['Armenian', 'Russian'],
+ population: 2994400,
+ flag: 'https://restcountries.eu/data/arm.svg',
+ currency: 'Armenian dram'
+ },
+ {
+ name: 'Aruba',
+ capital: 'Oranjestad',
+ languages: ['Dutch', '(Eastern) Punjabi'],
+ population: 107394,
+ flag: 'https://restcountries.eu/data/abw.svg',
+ currency: 'Aruban florin'
+ },
+ {
+ name: 'Australia',
+ capital: 'Canberra',
+ languages: ['English'],
+ population: 24117360,
+ flag: 'https://restcountries.eu/data/aus.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Austria',
+ capital: 'Vienna',
+ languages: ['German'],
+ population: 8725931,
+ flag: 'https://restcountries.eu/data/aut.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Azerbaijan',
+ capital: 'Baku',
+ languages: ['Azerbaijani'],
+ population: 9730500,
+ flag: 'https://restcountries.eu/data/aze.svg',
+ currency: 'Azerbaijani manat'
+ },
+ {
+ name: 'Bahamas',
+ capital: 'Nassau',
+ languages: ['English'],
+ population: 378040,
+ flag: 'https://restcountries.eu/data/bhs.svg',
+ currency: 'Bahamian dollar'
+ },
+ {
+ name: 'Bahrain',
+ capital: 'Manama',
+ languages: ['Arabic'],
+ population: 1404900,
+ flag: 'https://restcountries.eu/data/bhr.svg',
+ currency: 'Bahraini dinar'
+ },
+ {
+ name: 'Bangladesh',
+ capital: 'Dhaka',
+ languages: ['Bengali'],
+ population: 161006790,
+ flag: 'https://restcountries.eu/data/bgd.svg',
+ currency: 'Bangladeshi taka'
+ },
+ {
+ name: 'Barbados',
+ capital: 'Bridgetown',
+ languages: ['English'],
+ population: 285000,
+ flag: 'https://restcountries.eu/data/brb.svg',
+ currency: 'Barbadian dollar'
+ },
+ {
+ name: 'Belarus',
+ capital: 'Minsk',
+ languages: ['Belarusian', 'Russian'],
+ population: 9498700,
+ flag: 'https://restcountries.eu/data/blr.svg',
+ currency: 'New Belarusian ruble'
+ },
+ {
+ name: 'Belgium',
+ capital: 'Brussels',
+ languages: ['Dutch', 'French', 'German'],
+ population: 11319511,
+ flag: 'https://restcountries.eu/data/bel.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Belize',
+ capital: 'Belmopan',
+ languages: ['English', 'Spanish'],
+ population: 370300,
+ flag: 'https://restcountries.eu/data/blz.svg',
+ currency: 'Belize dollar'
+ },
+ {
+ name: 'Benin',
+ capital: 'Porto-Novo',
+ languages: ['French'],
+ population: 10653654,
+ flag: 'https://restcountries.eu/data/ben.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Bermuda',
+ capital: 'Hamilton',
+ languages: ['English'],
+ population: 61954,
+ flag: 'https://restcountries.eu/data/bmu.svg',
+ currency: 'Bermudian dollar'
+ },
+ {
+ name: 'Bhutan',
+ capital: 'Thimphu',
+ languages: ['Dzongkha'],
+ population: 775620,
+ flag: 'https://restcountries.eu/data/btn.svg',
+ currency: 'Bhutanese ngultrum'
+ },
+ {
+ name: 'Bolivia (Plurinational State of)',
+ capital: 'Sucre',
+ languages: ['Spanish', 'Aymara', 'Quechua'],
+ population: 10985059,
+ flag: 'https://restcountries.eu/data/bol.svg',
+ currency: 'Bolivian boliviano'
+ },
+ {
+ name: 'Bonaire, Sint Eustatius and Saba',
+ capital: 'Kralendijk',
+ languages: ['Dutch'],
+ population: 17408,
+ flag: 'https://restcountries.eu/data/bes.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Bosnia and Herzegovina',
+ capital: 'Sarajevo',
+ languages: ['Bosnian', 'Croatian', 'Serbian'],
+ population: 3531159,
+ flag: 'https://restcountries.eu/data/bih.svg',
+ currency: 'Bosnia and Herzegovina convertible mark'
+ },
+ {
+ name: 'Botswana',
+ capital: 'Gaborone',
+ languages: ['English', 'Tswana'],
+ population: 2141206,
+ flag: 'https://restcountries.eu/data/bwa.svg',
+ currency: 'Botswana pula'
+ },
+ {
+ name: 'Bouvet Island',
+ capital: '',
+ languages: ['Norwegian', 'Norwegian Bokmål', 'Norwegian Nynorsk'],
+ population: 0,
+ flag: 'https://restcountries.eu/data/bvt.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Brazil',
+ capital: 'Brasília',
+ languages: ['Portuguese'],
+ population: 206135893,
+ flag: 'https://restcountries.eu/data/bra.svg',
+ currency: 'Brazilian real'
+ },
+ {
+ name: 'British Indian Ocean Territory',
+ capital: 'Diego Garcia',
+ languages: ['English'],
+ population: 3000,
+ flag: 'https://restcountries.eu/data/iot.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'United States Minor Outlying Islands',
+ capital: '',
+ languages: ['English'],
+ population: 300,
+ flag: 'https://restcountries.eu/data/umi.svg',
+ currency: 'United States Dollar'
+ },
+ {
+ name: 'Virgin Islands (British)',
+ capital: 'Road Town',
+ languages: ['English'],
+ population: 28514,
+ flag: 'https://restcountries.eu/data/vgb.svg',
+ currency: '[D]'
+ },
+ {
+ name: 'Virgin Islands (U.S.)',
+ capital: 'Charlotte Amalie',
+ languages: ['English'],
+ population: 114743,
+ flag: 'https://restcountries.eu/data/vir.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Brunei Darussalam',
+ capital: 'Bandar Seri Begawan',
+ languages: ['Malay'],
+ population: 411900,
+ flag: 'https://restcountries.eu/data/brn.svg',
+ currency: 'Brunei dollar'
+ },
+ {
+ name: 'Bulgaria',
+ capital: 'Sofia',
+ languages: ['Bulgarian'],
+ population: 7153784,
+ flag: 'https://restcountries.eu/data/bgr.svg',
+ currency: 'Bulgarian lev'
+ },
+ {
+ name: 'Burkina Faso',
+ capital: 'Ouagadougou',
+ languages: ['French', 'Fula'],
+ population: 19034397,
+ flag: 'https://restcountries.eu/data/bfa.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Burundi',
+ capital: 'Bujumbura',
+ languages: ['French', 'Kirundi'],
+ population: 10114505,
+ flag: 'https://restcountries.eu/data/bdi.svg',
+ currency: 'Burundian franc'
+ },
+ {
+ name: 'Cambodia',
+ capital: 'Phnom Penh',
+ languages: ['Khmer'],
+ population: 15626444,
+ flag: 'https://restcountries.eu/data/khm.svg',
+ currency: 'Cambodian riel'
+ },
+ {
+ name: 'Cameroon',
+ capital: 'Yaoundé',
+ languages: ['English', 'French'],
+ population: 22709892,
+ flag: 'https://restcountries.eu/data/cmr.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Canada',
+ capital: 'Ottawa',
+ languages: ['English', 'French'],
+ population: 36155487,
+ flag: 'https://restcountries.eu/data/can.svg',
+ currency: 'Canadian dollar'
+ },
+ {
+ name: 'Cabo Verde',
+ capital: 'Praia',
+ languages: ['Portuguese'],
+ population: 531239,
+ flag: 'https://restcountries.eu/data/cpv.svg',
+ currency: 'Cape Verdean escudo'
+ },
+ {
+ name: 'Cayman Islands',
+ capital: 'George Town',
+ languages: ['English'],
+ population: 58238,
+ flag: 'https://restcountries.eu/data/cym.svg',
+ currency: 'Cayman Islands dollar'
+ },
+ {
+ name: 'Central African Republic',
+ capital: 'Bangui',
+ languages: ['French', 'Sango'],
+ population: 4998000,
+ flag: 'https://restcountries.eu/data/caf.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Chad',
+ capital: "N'Djamena",
+ languages: ['French', 'Arabic'],
+ population: 14497000,
+ flag: 'https://restcountries.eu/data/tcd.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Chile',
+ capital: 'Santiago',
+ languages: ['Spanish'],
+ population: 18191900,
+ flag: 'https://restcountries.eu/data/chl.svg',
+ currency: 'Chilean peso'
+ },
+ {
+ name: 'China',
+ capital: 'Beijing',
+ languages: ['Chinese'],
+ population: 1377422166,
+ flag: 'https://restcountries.eu/data/chn.svg',
+ currency: 'Chinese yuan'
+ },
+ {
+ name: 'Christmas Island',
+ capital: 'Flying Fish Cove',
+ languages: ['English'],
+ population: 2072,
+ flag: 'https://restcountries.eu/data/cxr.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Cocos (Keeling) Islands',
+ capital: 'West Island',
+ languages: ['English'],
+ population: 550,
+ flag: 'https://restcountries.eu/data/cck.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Colombia',
+ capital: 'Bogotá',
+ languages: ['Spanish'],
+ population: 48759958,
+ flag: 'https://restcountries.eu/data/col.svg',
+ currency: 'Colombian peso'
+ },
+ {
+ name: 'Comoros',
+ capital: 'Moroni',
+ languages: ['Arabic', 'French'],
+ population: 806153,
+ flag: 'https://restcountries.eu/data/com.svg',
+ currency: 'Comorian franc'
+ },
+ {
+ name: 'Congo',
+ capital: 'Brazzaville',
+ languages: ['French', 'Lingala'],
+ population: 4741000,
+ flag: 'https://restcountries.eu/data/cog.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Congo (Democratic Republic of the)',
+ capital: 'Kinshasa',
+ languages: ['French', 'Lingala', 'Kongo', 'Swahili', 'Luba-Katanga'],
+ population: 85026000,
+ flag: 'https://restcountries.eu/data/cod.svg',
+ currency: 'Congolese franc'
+ },
+ {
+ name: 'Cook Islands',
+ capital: 'Avarua',
+ languages: ['English'],
+ population: 18100,
+ flag: 'https://restcountries.eu/data/cok.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Costa Rica',
+ capital: 'San José',
+ languages: ['Spanish'],
+ population: 4890379,
+ flag: 'https://restcountries.eu/data/cri.svg',
+ currency: 'Costa Rican colón'
+ },
+ {
+ name: 'Croatia',
+ capital: 'Zagreb',
+ languages: ['Croatian'],
+ population: 4190669,
+ flag: 'https://restcountries.eu/data/hrv.svg',
+ currency: 'Croatian kuna'
+ },
+ {
+ name: 'Cuba',
+ capital: 'Havana',
+ languages: ['Spanish'],
+ population: 11239004,
+ flag: 'https://restcountries.eu/data/cub.svg',
+ currency: 'Cuban convertible peso'
+ },
+ {
+ name: 'Curaçao',
+ capital: 'Willemstad',
+ languages: ['Dutch', '(Eastern) Punjabi', 'English'],
+ population: 154843,
+ flag: 'https://restcountries.eu/data/cuw.svg',
+ currency: 'Netherlands Antillean guilder'
+ },
+ {
+ name: 'Cyprus',
+ capital: 'Nicosia',
+ languages: ['Greek (modern)', 'Turkish', 'Armenian'],
+ population: 847000,
+ flag: 'https://restcountries.eu/data/cyp.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Czech Republic',
+ capital: 'Prague',
+ languages: ['Czech', 'Slovak'],
+ population: 10558524,
+ flag: 'https://restcountries.eu/data/cze.svg',
+ currency: 'Czech koruna'
+ },
+ {
+ name: 'Denmark',
+ capital: 'Copenhagen',
+ languages: ['Danish'],
+ population: 5717014,
+ flag: 'https://restcountries.eu/data/dnk.svg',
+ currency: 'Danish krone'
+ },
+ {
+ name: 'Djibouti',
+ capital: 'Djibouti',
+ languages: ['French', 'Arabic'],
+ population: 900000,
+ flag: 'https://restcountries.eu/data/dji.svg',
+ currency: 'Djiboutian franc'
+ },
+ {
+ name: 'Dominica',
+ capital: 'Roseau',
+ languages: ['English'],
+ population: 71293,
+ flag: 'https://restcountries.eu/data/dma.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Dominican Republic',
+ capital: 'Santo Domingo',
+ languages: ['Spanish'],
+ population: 10075045,
+ flag: 'https://restcountries.eu/data/dom.svg',
+ currency: 'Dominican peso'
+ },
+ {
+ name: 'Ecuador',
+ capital: 'Quito',
+ languages: ['Spanish'],
+ population: 16545799,
+ flag: 'https://restcountries.eu/data/ecu.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Egypt',
+ capital: 'Cairo',
+ languages: ['Arabic'],
+ population: 91290000,
+ flag: 'https://restcountries.eu/data/egy.svg',
+ currency: 'Egyptian pound'
+ },
+ {
+ name: 'El Salvador',
+ capital: 'San Salvador',
+ languages: ['Spanish'],
+ population: 6520675,
+ flag: 'https://restcountries.eu/data/slv.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Equatorial Guinea',
+ capital: 'Malabo',
+ languages: ['Spanish', 'French'],
+ population: 1222442,
+ flag: 'https://restcountries.eu/data/gnq.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Eritrea',
+ capital: 'Asmara',
+ languages: ['Tigrinya', 'Arabic', 'English'],
+ population: 5352000,
+ flag: 'https://restcountries.eu/data/eri.svg',
+ currency: 'Eritrean nakfa'
+ },
+ {
+ name: 'Estonia',
+ capital: 'Tallinn',
+ languages: ['Estonian'],
+ population: 1315944,
+ flag: 'https://restcountries.eu/data/est.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Ethiopia',
+ capital: 'Addis Ababa',
+ languages: ['Amharic'],
+ population: 92206005,
+ flag: 'https://restcountries.eu/data/eth.svg',
+ currency: 'Ethiopian birr'
+ },
+ {
+ name: 'Falkland Islands (Malvinas)',
+ capital: 'Stanley',
+ languages: ['English'],
+ population: 2563,
+ flag: 'https://restcountries.eu/data/flk.svg',
+ currency: 'Falkland Islands pound'
+ },
+ {
+ name: 'Faroe Islands',
+ capital: 'Tórshavn',
+ languages: ['Faroese'],
+ population: 49376,
+ flag: 'https://restcountries.eu/data/fro.svg',
+ currency: 'Danish krone'
+ },
+ {
+ name: 'Fiji',
+ capital: 'Suva',
+ languages: ['English', 'Fijian', 'Hindi', 'Urdu'],
+ population: 867000,
+ flag: 'https://restcountries.eu/data/fji.svg',
+ currency: 'Fijian dollar'
+ },
+ {
+ name: 'Finland',
+ capital: 'Helsinki',
+ languages: ['Finnish', 'Swedish'],
+ population: 5491817,
+ flag: 'https://restcountries.eu/data/fin.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'France',
+ capital: 'Paris',
+ languages: ['French'],
+ population: 66710000,
+ flag: 'https://restcountries.eu/data/fra.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'French Guiana',
+ capital: 'Cayenne',
+ languages: ['French'],
+ population: 254541,
+ flag: 'https://restcountries.eu/data/guf.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'French Polynesia',
+ capital: 'Papeetē',
+ languages: ['French'],
+ population: 271800,
+ flag: 'https://restcountries.eu/data/pyf.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'French Southern Territories',
+ capital: 'Port-aux-Français',
+ languages: ['French'],
+ population: 140,
+ flag: 'https://restcountries.eu/data/atf.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Gabon',
+ capital: 'Libreville',
+ languages: ['French'],
+ population: 1802278,
+ flag: 'https://restcountries.eu/data/gab.svg',
+ currency: 'Central African CFA franc'
+ },
+ {
+ name: 'Gambia',
+ capital: 'Banjul',
+ languages: ['English'],
+ population: 1882450,
+ flag: 'https://restcountries.eu/data/gmb.svg',
+ currency: 'Gambian dalasi'
+ },
+ {
+ name: 'Georgia',
+ capital: 'Tbilisi',
+ languages: ['Georgian'],
+ population: 3720400,
+ flag: 'https://restcountries.eu/data/geo.svg',
+ currency: 'Georgian Lari'
+ },
+ {
+ name: 'Germany',
+ capital: 'Berlin',
+ languages: ['German'],
+ population: 81770900,
+ flag: 'https://restcountries.eu/data/deu.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Ghana',
+ capital: 'Accra',
+ languages: ['English'],
+ population: 27670174,
+ flag: 'https://restcountries.eu/data/gha.svg',
+ currency: 'Ghanaian cedi'
+ },
+ {
+ name: 'Gibraltar',
+ capital: 'Gibraltar',
+ languages: ['English'],
+ population: 33140,
+ flag: 'https://restcountries.eu/data/gib.svg',
+ currency: 'Gibraltar pound'
+ },
+ {
+ name: 'Greece',
+ capital: 'Athens',
+ languages: ['Greek (modern)'],
+ population: 10858018,
+ flag: 'https://restcountries.eu/data/grc.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Greenland',
+ capital: 'Nuuk',
+ languages: ['Kalaallisut'],
+ population: 55847,
+ flag: 'https://restcountries.eu/data/grl.svg',
+ currency: 'Danish krone'
+ },
+ {
+ name: 'Grenada',
+ capital: "St. George's",
+ languages: ['English'],
+ population: 103328,
+ flag: 'https://restcountries.eu/data/grd.svg',
+ currency: 'East Caribbean dollar'
+ },
+ {
+ name: 'Guadeloupe',
+ capital: 'Basse-Terre',
+ languages: ['French'],
+ population: 400132,
+ flag: 'https://restcountries.eu/data/glp.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Guam',
+ capital: 'Hagåtña',
+ languages: ['English', 'Chamorro', 'Spanish'],
+ population: 184200,
+ flag: 'https://restcountries.eu/data/gum.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Guatemala',
+ capital: 'Guatemala City',
+ languages: ['Spanish'],
+ population: 16176133,
+ flag: 'https://restcountries.eu/data/gtm.svg',
+ currency: 'Guatemalan quetzal'
+ },
+ {
+ name: 'Guernsey',
+ capital: 'St. Peter Port',
+ languages: ['English', 'French'],
+ population: 62999,
+ flag: 'https://restcountries.eu/data/ggy.svg',
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+ population: 187356,
+ flag: 'https://restcountries.eu/data/stp.svg',
+ currency: 'São Tomé and Príncipe dobra'
+ },
+ {
+ name: 'Saudi Arabia',
+ capital: 'Riyadh',
+ languages: ['Arabic'],
+ population: 32248200,
+ flag: 'https://restcountries.eu/data/sau.svg',
+ currency: 'Saudi riyal'
+ },
+ {
+ name: 'Senegal',
+ capital: 'Dakar',
+ languages: ['French'],
+ population: 14799859,
+ flag: 'https://restcountries.eu/data/sen.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Serbia',
+ capital: 'Belgrade',
+ languages: ['Serbian'],
+ population: 7076372,
+ flag: 'https://restcountries.eu/data/srb.svg',
+ currency: 'Serbian dinar'
+ },
+ {
+ name: 'Seychelles',
+ capital: 'Victoria',
+ languages: ['French', 'English'],
+ population: 91400,
+ flag: 'https://restcountries.eu/data/syc.svg',
+ currency: 'Seychellois rupee'
+ },
+ {
+ name: 'Sierra Leone',
+ capital: 'Freetown',
+ languages: ['English'],
+ population: 7075641,
+ flag: 'https://restcountries.eu/data/sle.svg',
+ currency: 'Sierra Leonean leone'
+ },
+ {
+ name: 'Singapore',
+ capital: 'Singapore',
+ languages: ['English', 'Malay', 'Tamil', 'Chinese'],
+ population: 5535000,
+ flag: 'https://restcountries.eu/data/sgp.svg',
+ currency: 'Brunei dollar'
+ },
+ {
+ name: 'Sint Maarten (Dutch part)',
+ capital: 'Philipsburg',
+ languages: ['Dutch', 'English'],
+ population: 38247,
+ flag: 'https://restcountries.eu/data/sxm.svg',
+ currency: 'Netherlands Antillean guilder'
+ },
+ {
+ name: 'Slovakia',
+ capital: 'Bratislava',
+ languages: ['Slovak'],
+ population: 5426252,
+ flag: 'https://restcountries.eu/data/svk.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Slovenia',
+ capital: 'Ljubljana',
+ languages: ['Slovene'],
+ population: 2064188,
+ flag: 'https://restcountries.eu/data/svn.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Solomon Islands',
+ capital: 'Honiara',
+ languages: ['English'],
+ population: 642000,
+ flag: 'https://restcountries.eu/data/slb.svg',
+ currency: 'Solomon Islands dollar'
+ },
+ {
+ name: 'Somalia',
+ capital: 'Mogadishu',
+ languages: ['Somali', 'Arabic'],
+ population: 11079000,
+ flag: 'https://restcountries.eu/data/som.svg',
+ currency: 'Somali shilling'
+ },
+ {
+ name: 'South Africa',
+ capital: 'Pretoria',
+ languages: [
+ 'Afrikaans',
+ 'English',
+ 'Southern Ndebele',
+ 'Southern Sotho',
+ 'Swati',
+ 'Tswana',
+ 'Tsonga',
+ 'Venda',
+ 'Xhosa',
+ 'Zulu'
+ ],
+ population: 55653654,
+ flag: 'https://restcountries.eu/data/zaf.svg',
+ currency: 'South African rand'
+ },
+ {
+ name: 'South Georgia and the South Sandwich Islands',
+ capital: 'King Edward Point',
+ languages: ['English'],
+ population: 30,
+ flag: 'https://restcountries.eu/data/sgs.svg',
+ currency: 'British pound'
+ },
+ {
+ name: 'Korea (Republic of)',
+ capital: 'Seoul',
+ languages: ['Korean'],
+ population: 50801405,
+ flag: 'https://restcountries.eu/data/kor.svg',
+ currency: 'South Korean won'
+ },
+ {
+ name: 'South Sudan',
+ capital: 'Juba',
+ languages: ['English'],
+ population: 12131000,
+ flag: 'https://restcountries.eu/data/ssd.svg',
+ currency: 'South Sudanese pound'
+ },
+ {
+ name: 'Spain',
+ capital: 'Madrid',
+ languages: ['Spanish'],
+ population: 46438422,
+ flag: 'https://restcountries.eu/data/esp.svg',
+ currency: 'Euro'
+ },
+ {
+ name: 'Sri Lanka',
+ capital: 'Colombo',
+ languages: ['Sinhalese', 'Tamil'],
+ population: 20966000,
+ flag: 'https://restcountries.eu/data/lka.svg',
+ currency: 'Sri Lankan rupee'
+ },
+ {
+ name: 'Sudan',
+ capital: 'Khartoum',
+ languages: ['Arabic', 'English'],
+ population: 39598700,
+ flag: 'https://restcountries.eu/data/sdn.svg',
+ currency: 'Sudanese pound'
+ },
+ {
+ name: 'Suriname',
+ capital: 'Paramaribo',
+ languages: ['Dutch'],
+ population: 541638,
+ flag: 'https://restcountries.eu/data/sur.svg',
+ currency: 'Surinamese dollar'
+ },
+ {
+ name: 'Svalbard and Jan Mayen',
+ capital: 'Longyearbyen',
+ languages: ['Norwegian'],
+ population: 2562,
+ flag: 'https://restcountries.eu/data/sjm.svg',
+ currency: 'Norwegian krone'
+ },
+ {
+ name: 'Swaziland',
+ capital: 'Lobamba',
+ languages: ['English', 'Swati'],
+ population: 1132657,
+ flag: 'https://restcountries.eu/data/swz.svg',
+ currency: 'Swazi lilangeni'
+ },
+ {
+ name: 'Sweden',
+ capital: 'Stockholm',
+ languages: ['Swedish'],
+ population: 9894888,
+ flag: 'https://restcountries.eu/data/swe.svg',
+ currency: 'Swedish krona'
+ },
+ {
+ name: 'Switzerland',
+ capital: 'Bern',
+ languages: ['German', 'French', 'Italian'],
+ population: 8341600,
+ flag: 'https://restcountries.eu/data/che.svg',
+ currency: 'Swiss franc'
+ },
+ {
+ name: 'Syrian Arab Republic',
+ capital: 'Damascus',
+ languages: ['Arabic'],
+ population: 18564000,
+ flag: 'https://restcountries.eu/data/syr.svg',
+ currency: 'Syrian pound'
+ },
+ {
+ name: 'Taiwan',
+ capital: 'Taipei',
+ languages: ['Chinese'],
+ population: 23503349,
+ flag: 'https://restcountries.eu/data/twn.svg',
+ currency: 'New Taiwan dollar'
+ },
+ {
+ name: 'Tajikistan',
+ capital: 'Dushanbe',
+ languages: ['Tajik', 'Russian'],
+ population: 8593600,
+ flag: 'https://restcountries.eu/data/tjk.svg',
+ currency: 'Tajikistani somoni'
+ },
+ {
+ name: 'Tanzania, United Republic of',
+ capital: 'Dodoma',
+ languages: ['Swahili', 'English'],
+ population: 55155000,
+ flag: 'https://restcountries.eu/data/tza.svg',
+ currency: 'Tanzanian shilling'
+ },
+ {
+ name: 'Thailand',
+ capital: 'Bangkok',
+ languages: ['Thai'],
+ population: 65327652,
+ flag: 'https://restcountries.eu/data/tha.svg',
+ currency: 'Thai baht'
+ },
+ {
+ name: 'Timor-Leste',
+ capital: 'Dili',
+ languages: ['Portuguese'],
+ population: 1167242,
+ flag: 'https://restcountries.eu/data/tls.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Togo',
+ capital: 'Lomé',
+ languages: ['French'],
+ population: 7143000,
+ flag: 'https://restcountries.eu/data/tgo.svg',
+ currency: 'West African CFA franc'
+ },
+ {
+ name: 'Tokelau',
+ capital: 'Fakaofo',
+ languages: ['English'],
+ population: 1411,
+ flag: 'https://restcountries.eu/data/tkl.svg',
+ currency: 'New Zealand dollar'
+ },
+ {
+ name: 'Tonga',
+ capital: "Nuku'alofa",
+ languages: ['English', 'Tonga (Tonga Islands)'],
+ population: 103252,
+ flag: 'https://restcountries.eu/data/ton.svg',
+ currency: 'Tongan paʻanga'
+ },
+ {
+ name: 'Trinidad and Tobago',
+ capital: 'Port of Spain',
+ languages: ['English'],
+ population: 1349667,
+ flag: 'https://restcountries.eu/data/tto.svg',
+ currency: 'Trinidad and Tobago dollar'
+ },
+ {
+ name: 'Tunisia',
+ capital: 'Tunis',
+ languages: ['Arabic'],
+ population: 11154400,
+ flag: 'https://restcountries.eu/data/tun.svg',
+ currency: 'Tunisian dinar'
+ },
+ {
+ name: 'Turkey',
+ capital: 'Ankara',
+ languages: ['Turkish'],
+ population: 78741053,
+ flag: 'https://restcountries.eu/data/tur.svg',
+ currency: 'Turkish lira'
+ },
+ {
+ name: 'Turkmenistan',
+ capital: 'Ashgabat',
+ languages: ['Turkmen', 'Russian'],
+ population: 4751120,
+ flag: 'https://restcountries.eu/data/tkm.svg',
+ currency: 'Turkmenistan manat'
+ },
+ {
+ name: 'Turks and Caicos Islands',
+ capital: 'Cockburn Town',
+ languages: ['English'],
+ population: 31458,
+ flag: 'https://restcountries.eu/data/tca.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Tuvalu',
+ capital: 'Funafuti',
+ languages: ['English'],
+ population: 10640,
+ flag: 'https://restcountries.eu/data/tuv.svg',
+ currency: 'Australian dollar'
+ },
+ {
+ name: 'Uganda',
+ capital: 'Kampala',
+ languages: ['English', 'Swahili'],
+ population: 33860700,
+ flag: 'https://restcountries.eu/data/uga.svg',
+ currency: 'Ugandan shilling'
+ },
+ {
+ name: 'Ukraine',
+ capital: 'Kiev',
+ languages: ['Ukrainian'],
+ population: 42692393,
+ flag: 'https://restcountries.eu/data/ukr.svg',
+ currency: 'Ukrainian hryvnia'
+ },
+ {
+ name: 'United Arab Emirates',
+ capital: 'Abu Dhabi',
+ languages: ['Arabic'],
+ population: 9856000,
+ flag: 'https://restcountries.eu/data/are.svg',
+ currency: 'United Arab Emirates dirham'
+ },
+ {
+ name: 'United Kingdom of Great Britain and Northern Ireland',
+ capital: 'London',
+ languages: ['English'],
+ population: 65110000,
+ flag: 'https://restcountries.eu/data/gbr.svg',
+ currency: 'British pound'
+ },
+ {
+ name: 'United States of America',
+ capital: 'Washington, D.C.',
+ languages: ['English'],
+ population: 323947000,
+ flag: 'https://restcountries.eu/data/usa.svg',
+ currency: 'United States dollar'
+ },
+ {
+ name: 'Uruguay',
+ capital: 'Montevideo',
+ languages: ['Spanish'],
+ population: 3480222,
+ flag: 'https://restcountries.eu/data/ury.svg',
+ currency: 'Uruguayan peso'
+ },
+ {
+ name: 'Uzbekistan',
+ capital: 'Tashkent',
+ languages: ['Uzbek', 'Russian'],
+ population: 31576400,
+ flag: 'https://restcountries.eu/data/uzb.svg',
+ currency: "Uzbekistani so'm"
+ },
+ {
+ name: 'Vanuatu',
+ capital: 'Port Vila',
+ languages: ['Bislama', 'English', 'French'],
+ population: 277500,
+ flag: 'https://restcountries.eu/data/vut.svg',
+ currency: 'Vanuatu vatu'
+ },
+ {
+ name: 'Venezuela (Bolivarian Republic of)',
+ capital: 'Caracas',
+ languages: ['Spanish'],
+ population: 31028700,
+ flag: 'https://restcountries.eu/data/ven.svg',
+ currency: 'Venezuelan bolívar'
+ },
+ {
+ name: 'Viet Nam',
+ capital: 'Hanoi',
+ languages: ['Vietnamese'],
+ population: 92700000,
+ flag: 'https://restcountries.eu/data/vnm.svg',
+ currency: 'Vietnamese đồng'
+ },
+ {
+ name: 'Wallis and Futuna',
+ capital: 'Mata-Utu',
+ languages: ['French'],
+ population: 11750,
+ flag: 'https://restcountries.eu/data/wlf.svg',
+ currency: 'CFP franc'
+ },
+ {
+ name: 'Western Sahara',
+ capital: 'El Aaiún',
+ languages: ['Spanish'],
+ population: 510713,
+ flag: 'https://restcountries.eu/data/esh.svg',
+ currency: 'Moroccan dirham'
+ },
+ {
+ name: 'Yemen',
+ capital: "Sana'a",
+ languages: ['Arabic'],
+ population: 27478000,
+ flag: 'https://restcountries.eu/data/yem.svg',
+ currency: 'Yemeni rial'
+ },
+ {
+ name: 'Zambia',
+ capital: 'Lusaka',
+ languages: ['English'],
+ population: 15933883,
+ flag: 'https://restcountries.eu/data/zmb.svg',
+ currency: 'Zambian kwacha'
+ },
+ {
+ name: 'Zimbabwe',
+ capital: 'Harare',
+ languages: ['English', 'Shona', 'Northern Ndebele'],
+ population: 14240168,
+ flag: 'https://restcountries.eu/data/zwe.svg',
+ currency: 'Botswana pula'
+ }
+]
diff --git a/20_Day_Writing_clean_codes/20_day_starter/index.html b/20_Day_Writing_clean_codes/20_day_starter/index.html
new file mode 100644
index 0000000..ba00ff9
--- /dev/null
+++ b/20_Day_Writing_clean_codes/20_day_starter/index.html
@@ -0,0 +1,17 @@
+
+
+
+
+ 30DaysOfJavaScript:20 Day
+
+
+
+ 30DaysOfJavaScript:20 Day
+ Writing clean code
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/20_Day_Writing_clean_codes/20_day_starter/scripts/main.js b/20_Day_Writing_clean_codes/20_day_starter/scripts/main.js
new file mode 100644
index 0000000..c6045c8
--- /dev/null
+++ b/20_Day_Writing_clean_codes/20_day_starter/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/20_Day_Writing_clean_codes/20_day_writing_clean_codes.md b/20_Day_Writing_clean_codes/20_day_writing_clean_codes.md
new file mode 100644
index 0000000..50ed23a
--- /dev/null
+++ b/20_Day_Writing_clean_codes/20_day_writing_clean_codes.md
@@ -0,0 +1,359 @@
+
+
30 Days Of JavaScript: Writing Clean Codes
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
+
30 Days Of JavaScript: Document Object Model(DOM)
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
First Title
+ Second Title
+ Third Title
+
+
+
+
+```
+
+#### Getting elements by tag name
+
+**_getElementsByTagName()_**:takes a take name as a string parameter and this method returns an HTMLCollection object. An HTMLCollection is an array like object of HTML elements. The length property provides the size of the collection. Whenever we use this method we access the individual elements using index or after loop through each individual items. An HTMLCollection does not support all array methods therefore we should use regular for loop instead of forEach.
+
+```js
+// syntax
+document.getElementsByTagName('tagname')
+```
+
+```js
+const allTitles = document.getElementsByTagName('h1')
+
+console.log(allTitles) //HTMCollections
+console.log(allTitles.length) // 4
+
+for (let i = 0; i < allTitles.length; i++) {
+ console.log(allTitles[i]) // prints each elements in the HTMLCollection
+}
+```
+
+#### Getting elements by class name
+
+**_getElementsByClassName()_** method returns an HTMLCollection object. An HTMLCollection is an array like list of HTML elements. The length property provides the size of the collection. It is possible to loop through all the HTMLCollection elements. See the example below
+
+```js
+//syntax
+document.getElementsByClassName('classname')
+```
+
+```js
+const allTitles = document.getElementsByClassName('title')
+
+console.log(allTitles) //HTMCollections
+console.log(allTitles.length) // 4
+
+for (let i = 0; i < allTitles.length; i++) {
+ console.log(allTitles[i]) // prints each elements in the HTMLCollection
+}
+```
+
+#### Getting an element by id
+
+**_getElementsById()_** targets a single HTML element. We pass the id without # as an argument.
+
+```js
+//syntax
+document.getElementById('id')
+```
+
+```js
+let firstTitle = document.getElementById('first-title')
+console.log(firstTitle) // First Title
+```
+
+#### Getting elements by using querySelector methods
+
+The _document.querySelector_ method can select an HTML or HTML elements by tag name, by id or by class name.
+
+**_querySelector_**: can be used to select HTML element by its tag name, id or class. If the tag name is used it selects only the first element.
+
+```js
+let firstTitle = document.querySelector('h1') // select the first available h2 element
+let firstTitle = document.querySelector('#first-title') // select id with first-title
+let firstTitle = document.querySelector('.title') // select the first available h2 element with class title
+```
+
+**_querySelectorAll_**: can be used to select html element by its tag name or class. It return a nodeList which is an array like object which support array methods. We can use **_for loop_** or **_forEach_** to loop through each nodeList elements.
+
+```js
+const allTitles = document.querySelectorAll('h1')
+
+console.log(allTitles.length) // 4
+for (let i = 0; i < allTitles.length; i++) {
+ console.log(allTitles[i])
+}
+
+allTitles.forEach(title => console.log(title))
+const allTitles = document.querySelectorAll('.title') // the same goes for selecting using class
+```
+
+### Adding attribute
+
+An attribute is added in the opening tag of HTML which gives additional information about the element. Common HTML attributes: id, class, src, style, href,disabled, title, alt. Lets add id and class for the fourth title.
+
+```js
+const titles = document.querySelectorAll('h1')
+titles[3].class = 'title'
+titles[3].id = 'fourth-title'
+```
+
+#### Adding attribute using setAttribute
+
+The **_setAttribute()_** method set any html attribute. It takes two parameters the type of the attribute and the name of the attribute.
+Let's add class and id attribute for the fourth title.
+
+```js
+const titles = document.querySelectorAll('h1')
+titles[3].setAttribute('class', 'title')
+titles[3].setAttribute('id', 'fourth-title')
+```
+
+#### Adding attribute without setAttribute
+
+We can use normal object setting method to set an attribute but this can not work for all elements. Some attributes are DOM object property and they can be set directly. For instance id and class
+
+```js
+//another way to setting an attribute
+titles[3].className = 'title'
+titles[3].id = 'fourth-title'
+```
+
+#### Adding class using classList
+
+The class list method is a good method to append additional class. It does not override the original class if a class exists rather it adds additional class for the element.
+
+```js
+//another way to setting an attribute: append the class, doesn't over ride
+titles[3].classList.add('title', 'header-title')
+```
+
+#### Removing class using remove
+
+Similar to adding we can also remove class from an element. We can remove a specific class from an element.
+
+```js
+//another way to setting an attribute: append the class, doesn't over ride
+titles[3].classList.remove('title', 'header-title')
+```
+
+### Adding Text to HTML element
+
+An HTML is a build block of an opening tag, a closing tag and a text content. We can add a text content using the property _textContent_ or \*innerHTML.
+
+#### Adding Text content using textContent
+
+The _textContent_ property is used to add text to an HTML element.
+
+```js
+const titles = document.querySelectorAll('h1')
+titles[3].textContent = 'Fourth Title'
+```
+
+#### Adding Text Content using innHTML
+
+Most people get confused between _textContent_ and _innerHTML_. _textContent_ is meant to add text to an HTML element, however innerHTML can add a text or HTML element or elements as a child.
+
+##### Text Content
+
+We assign *textContent* HTML object property to a text
+
+```js
+const titles = document.querySelectorAll('h1')
+titles[3].textContent = 'Fourth Title'
+```
+
+##### Inner HTML
+
+We use innerHTML property when we like to replace or a completely new children content to a parent element.
+It value we assign is going to be a string of HTML elements.
+
+```html
+
+
+
+ JavaScript for Everyone:DOM
+
+
+
+
Asabeneh Yetayeh challenges in 2020
+
30DaysOfJavaScript Challenge
+
+
+
Asabeneh Yetayeh challenges in 2020
+
30DaysOfJavaScript Challenge
+
+ - 30DaysOfPython Challenge Done
+ - 30DaysOfJavaScript Challenge Ongoing
+ - 30DaysOfReact Challenge Coming
+ - 30DaysOfFullStack Challenge Coming
+ - 30DaysOfDataAnalysis Challenge Coming
+ - 30DaysOfReactNative Challenge Coming
+ - 30DaysOfMachineLearning Challenge Coming
+
+
+
Asabeneh Yetayeh challenges in 2020
+
30DaysOfJavaScript Challenge
+
+ - 30DaysOfPython Challenge Done
+ - 30DaysOfJavaScript Challenge Ongoing
+ - 30DaysOfReact Challenge Coming
+ - 30DaysOfFullStack Challenge Coming
+ - 30DaysOfDataAnalysis Challenge Coming
+ - 30DaysOfReactNative Challenge Coming
+ - 30DaysOfMachineLearning Challenge Coming
+
+
+
Asabeneh Yetayeh challenges in 2020
+
30DaysOfJavaScript Challenge
+
+ - 30DaysOfPython Challenge Done
+ - 30DaysOfJavaScript Challenge Ongoing
+ - 30DaysOfReact Challenge Coming
+ - 30DaysOfFullStack Challenge Coming
+ - 30DaysOfDataAnalysis Challenge Coming
+ - 30DaysOfReactNative Challenge Coming
+ - 30DaysOfMachineLearning Challenge Coming
+
+
+
30 Days Of JavaScript: Manipulating DOM Object
+
+
+
+
Author:
+Asabeneh Yetayeh
+ January, 2020
+
+
+
Removing child Node
+ Asabeneh Yetayeh challenges in 2020
+
+ - 30DaysOfPython Challenge Done
+ - 30DaysOfJavaScript Challenge Done
+ - 30DaysOfReact Challenge Coming
+ - 30DaysOfFullStack Challenge Coming
+ - 30DaysOfDataAnalysis Challenge Coming
+ - 30DaysOfReactNative Challenge Coming
+ - 30DaysOfMachineLearning Challenge Coming
+
+
+
+
+
+
+```
+
+As we have see in the previous section there is a better way to eliminate all the inner HTML elements or the children of a parent element using the method *innerHTML* properties.
+
+```html
+
+
+
+
+ Document Object Model:30 Days Of JavaScript
+
+
+
+ Removing child Node
+ Asabeneh Yetayeh challenges in 2020
+
+ - 30DaysOfPython Challenge Done
+ - 30DaysOfJavaScript Challenge Done
+ - 30DaysOfReact Challenge Coming
+ - 30DaysOfFullStack Challenge Coming
+ - 30DaysOfDataAnalysis Challenge Coming
+ - 30DaysOfReactNative Challenge Coming
+ - 30DaysOfMachineLearning Challenge Coming
+
+
+
+
+
+
+```
+
+The above snippet of code cleared all the child elements.
+
+---
+
+🌕 You are so special, you are progressing everyday. Now, you knew how to destroy a created DOM element when it is needed. You learned DOM and now you have the capability to build and develop applications. You are left with only eight days to your way to greatness. Now do some exercises for your brain and for your muscle.
+
+## Exercises
+
+### Exercises: Level 1
+
+1. Create a div container on HTML document and create 100 to 100 numbers dynamically and append to the container div.
+ - Even numbers background is green
+ - Odd numbers background is yellow
+ - Prime numbers background is red
+
+
+
+### Exercises: Level 2
+
+1. Use the countries array to display all the countries.See the design
+
+
+
+### Exercises: Level 3
+
+Check the requirement of this project from both images(jpg and gif). All the data and CSS has been implemented using JavaScript only. The data is found on starter folder project_3. The drop down button has been created using [*details*](https://www.w3schools.com/tags/tag_details.asp) HTML element.
+
+
+
+
+
+🎉 CONGRATULATIONS ! 🎉
+
+[<< Day 21](../21_Day_DOM/21_day_dom.md) | [Day 23 >>](../23_Day_Event_listeners/23_day_event_listeners.md)
\ No newline at end of file
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diff --git a/22_Day_Manipulating_DOM_object/22_day_starters/project_1/index.html b/22_Day_Manipulating_DOM_object/22_day_starters/project_1/index.html
new file mode 100644
index 0000000..6855059
--- /dev/null
+++ b/22_Day_Manipulating_DOM_object/22_day_starters/project_1/index.html
@@ -0,0 +1,22 @@
+
+
+
+
+ 30DaysOfJavaScript:22 Day: Number Generator
+
+
+
+ Number Generator
+ 30DaysOfJavaScript:DOM Day 2
+ Author: Asabeneh Yetayeh
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/22_Day_Manipulating_DOM_object/22_day_starters/project_1/scripts/main.js b/22_Day_Manipulating_DOM_object/22_day_starters/project_1/scripts/main.js
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index 0000000..c6045c8
--- /dev/null
+++ b/22_Day_Manipulating_DOM_object/22_day_starters/project_1/scripts/main.js
@@ -0,0 +1,2 @@
+console.log(countries)
+alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
diff --git a/22_Day_Manipulating_DOM_object/22_day_starters/project_2/data/countries.js b/22_Day_Manipulating_DOM_object/22_day_starters/project_2/data/countries.js
new file mode 100644
index 0000000..e57b005
--- /dev/null
+++ b/22_Day_Manipulating_DOM_object/22_day_starters/project_2/data/countries.js
@@ -0,0 +1,195 @@
+const countries = [
+ 'Afghanistan',
+ 'Albania',
+ 'Algeria',
+ 'Andorra',
+ 'Angola',
+ 'Antigua and Barbuda',
+ 'Argentina',
+ 'Armenia',
+ 'Australia',
+ 'Austria',
+ 'Azerbaijan',
+ 'Bahamas',
+ 'Bahrain',
+ 'Bangladesh',
+ 'Barbados',
+ 'Belarus',
+ 'Belgium',
+ 'Belize',
+ 'Benin',
+ 'Bhutan',
+ 'Bolivia',
+ 'Bosnia and Herzegovina',
+ 'Botswana',
+ 'Brazil',
+ 'Brunei',
+ 'Bulgaria',
+ 'Burkina Faso',
+ 'Burundi',
+ 'Cambodia',
+ 'Cameroon',
+ 'Canada',
+ 'Cape Verde',
+ 'Central African Republic',
+ 'Chad',
+ 'Chile',
+ 'China',
+ 'Colombi',
+ 'Comoros',
+ 'Congo (Brazzaville)',
+ 'Congo',
+ 'Costa Rica',
+ "Cote d'Ivoire",
+ 'Croatia',
+ 'Cuba',
+ 'Cyprus',
+ 'Czech Republic',
+ 'Denmark',
+ 'Djibouti',
+ 'Dominica',
+ 'Dominican Republic',
+ 'East Timor (Timor Timur)',
+ 'Ecuador',
+ 'Egypt',
+ 'El Salvador',
+ 'Equatorial Guinea',
+ 'Eritrea',
+ 'Estonia',
+ 'Ethiopia',
+ 'Fiji',
+ 'Finland',
+ 'France',
+ 'Gabon',
+ 'Gambia, The',
+ 'Georgia',
+ 'Germany',
+ 'Ghana',
+ 'Greece',
+ 'Grenada',
+ 'Guatemala',
+ 'Guinea',
+ 'Guinea-Bissau',
+ 'Guyana',
+ 'Haiti',
+ 'Honduras',
+ 'Hungary',
+ 'Iceland',
+ 'India',
+ 'Indonesia',
+ 'Iran',
+ 'Iraq',
+ 'Ireland',
+ 'Israel',
+ 'Italy',
+ 'Jamaica',
+ 'Japan',
+ 'Jordan',
+ 'Kazakhstan',
+ 'Kenya',
+ 'Kiribati',
+ 'Korea, North',
+ 'Korea, South',
+ 'Kuwait',
+ 'Kyrgyzstan',
+ 'Laos',
+ 'Latvia',
+ 'Lebanon',
+ 'Lesotho',
+ 'Liberia',
+ 'Libya',
+ 'Liechtenstein',
+ 'Lithuania',
+ 'Luxembourg',
+ 'Macedonia',
+ 'Madagascar',
+ 'Malawi',
+ 'Malaysia',
+ 'Maldives',
+ 'Mali',
+ 'Malta',
+ 'Marshall Islands',
+ 'Mauritania',
+ 'Mauritius',
+ 'Mexico',
+ 'Micronesia',
+ 'Moldova',
+ 'Monaco',
+ 'Mongolia',
+ 'Morocco',
+ 'Mozambique',
+ 'Myanmar',
+ 'Namibia',
+ 'Nauru',
+ 'Nepal',
+ 'Netherlands',
+ 'New Zealand',
+ 'Nicaragua',
+ 'Niger',
+ 'Nigeria',
+ 'Norway',
+ 'Oman',
+ 'Pakistan',
+ 'Palau',
+ 'Panama',
+ 'Papua New Guinea',
+ 'Paraguay',
+ 'Peru',
+ 'Philippines',
+ 'Poland',
+ 'Portugal',
+ 'Qatar',
+ 'Romania',
+ 'Russia',
+ 'Rwanda',
+ 'Saint Kitts and Nevis',
+ 'Saint Lucia',
+ 'Saint Vincent',
+ 'Samoa',
+ 'San Marino',
+ 'Sao Tome and Principe',
+ 'Saudi Arabia',
+ 'Senegal',
+ 'Serbia and Montenegro',
+ 'Seychelles',
+ 'Sierra Leone',
+ 'Singapore',
+ 'Slovakia',
+ 'Slovenia',
+ 'Solomon Islands',
+ 'Somalia',
+ 'South Africa',
+ 'Spain',
+ 'Sri Lanka',
+ 'Sudan',
+ 'Suriname',
+ 'Swaziland',
+ 'Sweden',
+ 'Switzerland',
+ 'Syria',
+ 'Taiwan',
+ 'Tajikistan',
+ 'Tanzania',
+ 'Thailand',
+ 'Togo',
+ 'Tonga',
+ 'Trinidad and Tobago',
+ 'Tunisia',
+ 'Turkey',
+ 'Turkmenistan',
+ 'Tuvalu',
+ 'Uganda',
+ 'Ukraine',
+ 'United Arab Emirates',
+ 'United Kingdom',
+ 'United States',
+ 'Uruguay',
+ 'Uzbekistan',
+ 'Vanuatu',
+ 'Vatican City',
+ 'Venezuela',
+ 'Vietnam',
+ 'Yemen',
+ 'Zambia',
+ 'Zimbabwe'
+]
diff --git a/22_Day_Manipulating_DOM_object/22_day_starters/project_2/index.html b/22_Day_Manipulating_DOM_object/22_day_starters/project_2/index.html
new file mode 100644
index 0000000..85b7c80
--- /dev/null
+++ b/22_Day_Manipulating_DOM_object/22_day_starters/project_2/index.html
@@ -0,0 +1,31 @@
+
+
+
+
+ 30DaysOfJavaScript:22 Day: World Countries List
+
+
+
+
+ World Countries List
+
+
+ 30DaysOfJavaScript:DOM-Day-2
+ Author: Asabeneh Yetayeh
+
+
+
+
+
+
+
+
+
+
+
+
+ 
@@ -14,48 +14,51 @@
+
+
+ Author:
+ Asabeneh Yetayeh