day 28

.gitignore

@@ -14,7 +14,6 @@ day9.md
 day10.md
 01_02_03_days_backup.md
 test.md
-28_Day
 29_Day
 30_Day
 test.html

02_Day/02_day_data_types.md

@@ -617,7 +617,7 @@ 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
+1.  *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)
@@ -635,10 +635,11 @@ 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
+1.  *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
@@ -801,7 +802,7 @@ console.log(typeof null)        // object
 
 ### 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
@@ -941,7 +942,7 @@ console.log(numInt) // 9
     5 1 5 25 125
     ```
 
-9.  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.  Use __substr__ to slice out the phrase __because because because__ in the following sentence:__'You cannot end a sentence with because because because is a conjunction'__
 
 ### Exercises: Level 3
 

03_Day/03_booleans_operators_date.md

@@ -125,7 +125,7 @@ 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
@@ -231,15 +231,15 @@ The following symbols are the common logical operators:
 ```js
 //&& 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
 
-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
 

05_Day/05_day_arrays.md

@@ -331,7 +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

28_Day/28_day_dom_day_8.md

@@ -0,0 +1,37 @@
+<div align="center">
+  <h1> 30 Days Of JavaScript</h1>
+  <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/">
+  <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&logo=linkedin&style=social">
+  </a>
+  <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh">
+  <img alt="Twitter Follow" src="https://img.shields.io/twitter/follow/asabeneh?style=social">
+  </a>
+
+<sub>Author:
+<a href="https://www.linkedin.com/in/asabeneh/" target="_blank">Asabeneh Yetayeh</a><br>
+<small> January, 2020</small>
+</sub>
+
+</div>
+
+[<< Day 27](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master27_Day27_day_dom_day_7.md) | [Day 29>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/29_Day/29_day_dom_day_9.md)
+
+![Thirty Days Of JavaScript](../images/banners/day_1_28.png)
+
+- [Day 28](#day-28)
+  - [Exercises](#exercises)
+    - [Exercise: Level 1](#exercise-level-1)
+
+# Day 28
+
+## Exercises
+
+### Exercise: Level 1
+
+1. Create the following using HTML, CSS, and JavaScript
+
+![Slider](./../images/projects/dom_mini_project_leaderboard_day_8.1.png)
+
+🎉 CONGRATULATIONS ! 🎉
+
+[<< Day 27](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master27_Day27_day_dom_day_7.md) | [Day 29>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/29_Day/29_day_dom_day_9.md)

28_Day/28_day_starter/index.html

@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <title>30DaysOfJavaScript:11 Day </title>
+</head>
+
+<body>
+    <h1>30DaysOfJavaScript:11 Day</h1>
+    <h2>Destructuring and Spread</h2>
+
+    <script src="./data/countries_data.js"></script>
+    <script src="./scripts/main.js"></script>
+
+</body>
+
+</html>

readMe.md

@@ -536,14 +536,14 @@ Let us declare variables with different data types. To declare a variable, we ne
 
 ```js
 // 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 isMarried = true       // boolean data type
+let age = 100 // age in years
+let isMarried = true
 
-console.log(firstName, lastName, country, city, isMarried)
+console.log(firstName, lastName, country, city, age, isMarried)
 ```
 
 ```sh