Questions 1-5

10 months ago · 5a349eedd6
parent 0d1e023179
commit 5a349eedd6
4 changed files with 289 additions and 0 deletions
--- a/01_Day_JavaScript_Refresher/30daysofJS.html
+++ b/01_Day_JavaScript_Refresher/30daysofJS.html
@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>30DaysOfJavaScript:External script</title>
+    </head>
+    <body>
+        <button>External</button>
+        <script src="helloworld.js"></script>
+        <script src="./introduction.js"></script>
+    </body>
+</html>
--- a/01_Day_JavaScript_Refresher/helloworld.js
+++ b/01_Day_JavaScript_Refresher/helloworld.js
@ -0,0 +1,6 @@
+const firstName = "Steven"
+const lastName = "Guatemala"
+
+function fullName(){
+  return firstName + "" + lastName;
+}
--- a/01_Day_JavaScript_Refresher/introduction.js
+++ b/01_Day_JavaScript_Refresher/introduction.js
@ -0,0 +1,272 @@
+console.log('Welcome to 30DaysOfJavaScript')
+
+// const fruits = ['banana', 'orange', 'mango', 'lemon'] 
+// let firstFruit = fruits[0]
+// let lastFruit = fruits[3]
+
+// console.log('Fruits:', fruits)
+// console.log('Number of fruits:', fruits.length)
+// console.log(firstFruit)
+// console.log(lastFruit)
+
+// const groceryStore = ['Tjs', 'Walmarts', 'Aldis', 'Krogers']
+// let firstgrocery = groceryStore[0]
+
+// console.log(firstgrocery)
+
+// const numbers = [1, 2, 3, 4, 5]
+// numbers[0] = 10
+// numbers[1] = 20
+
+// console.log(numbers)
+// Modifying array element
+// const countries = [
+//     'Albania',
+//     'Bolivia',
+//     'Canada',
+//     'Denmark',
+//     'Ethiopia',
+//     'Finland',
+//     'Germany',
+//     'Hungary',
+//     'Ireland',
+//     'Japan',
+//     'Kenya',
+//   ]
+//   countries[0] = 'Afghanistan'
+  
+//   let lastIndex = countries.length - 1
+//   countries[lastIndex] = 'Korea'
+//   console.log(countries)
+
+//   Methods to manipulate array
+// const arr = Array()
+// console.log(arr)
+
+// const eightEmptyValues = Array(8)
+// console.log(eightEmptyValues)
+
+// Creating static values with fill
+// const arr = Array()
+// console.log(arr)
+
+// const eightXvalues = Array(8).fill('X')
+// console.log(eightXvalues)
+
+// const eight0values = Array(8).fill(0)
+// console.log(eight0values)
+
+// const four4values = Array(4).fill(4)
+// console.log(four4values)
+
+// Concatenating array using concat
+// const firstList = [1, 2, 3]
+// const secondList = [4, 5, 6]
+// const thirdList = firstList.concat(secondList)
+
+// console.log(thirdList)
+
+// const fruits = ['banana', 'orange', 'mango']
+// const vegetable = ['carrot', 'potato', 'onion']
+// const fruitsAnDVegetables = fruits.concat(vegetable)
+
+// console.log(fruitsAnDVegetables)
+
+// Getting array length
+// const numbers = [1, 2, 3, 4, 5]
+// console.log(numbers.length) // -> 5 is the size of the array
+
+
+// const fruits = ['banana', 'orange', 'mango', 'lemon']
+// let index = fruits.indexOf('banana') //0
+
+// if(index != -1) {
+//     console.log('this fruit does exsist in the array')
+// } else {
+//     console.log('this fruit does not exsist in the array')
+// }
+
+// let indexOfAvocado = fruits.indexOf('avocado')
+//  if(indexOfAvocado != -1){
+//     console.log('this fruit does exsist in the array')
+//  } else {
+//     console.log('this fruit does not exsist in the array')
+//  }
+
+//  Getting last index of an element in array
+// const numbers = [1, 2, 3, 4, 5, 3, 1, 2]
+
+// console.log(numbers.lastIndexOf(2))
+// console.log(numbers.lastIndexOf(0))
+// console.log(numbers.lastIndexOf(1))
+// console.log(numbers.lastIndexOf(4))
+// console.log(numbers.lastIndexOf(6))
+
+// includes:To check if an item exist in an array. If it exist it returns the true else it returns false.
+// const numbers = [1, 2, 3, 4, 5]
+
+// console.log(numbers.includes(5))
+// console.log(numbers.includes(0))
+// console.log(numbers.includes(3))
+
+// const webTechs = [
+//     'html',
+//     'css',
+//     'js',
+//     'node',
+//     'mongodb',
+// ]
+
+// console.log(webTechs.includes('node'))
+// console.log(webTechs.includes('c'))
+
+// Checking array Array.isArray:To check if the data type is an array
+// const numbers = [1, 2, 3, 4, 5]
+// console.log(Array.isArray(numbers))
+
+// const number = 100
+// console.log(Array.isArray(number))
+
+// slice array elements
+// const numbers = [1, 2, 3, 4, 5]
+// console.log(numbers.slice())
+// console.log(numbers.slice(1, 4))
+
+// Adding item to an array using push
+
+// const arr = ['item1', 'item2', 'item3']
+// arr.push('new item')
+
+// console.log(arr)
+
+// const numbers = [1, 2, 3, 4, 5]
+// numbers.pop(5)
+
+// console.log(numbers)
+
+// Array of arrays
+// const firstNums = [1, 2, 3]
+// const secondNums = [1, 4, 9]
+
+// const arrayOfArray = [
+//     [1, 2, 3],
+//     [1, 4, 9],
+// ]
+
+// console.log(arrayOfArray[0])
+// console.log(arrayOfArray[1])
+
+// const fronEnd = ['html', 'js', 'css']
+// const backEnd = ['node', 'sql']
+
+// const fullStack = [
+    
+//     [fronEnd],
+//     [backEnd]
+// ]
+
+// console.log(fullStack)
+// console.log(fullStack[0])
+ 
+// Declare an empty array;
+// const arr = Array()
+// console.log(arr)
+
+// // Declare an array with more than 5 number of elements 2-4
+// const countries = ['US', 'Mexico', 'Guatemala', 'UK', 'Ireland', 'Canada']
+// console.log(countries.length)
+// console.log(countries[0])
+// console.log(countries[3])
+// console.log(countries[5])
+
+// const mixedDataTypes = [
+//     'bill',
+//     'billard',
+//     34,
+//     1986,
+//     'bobbillard0@gmail.com',
+//     1234567
+
+// ]
+
+// console.log(mixedDataTypes.length)
+
+// const itCompanies = ['Facebook', 'Google', 'Microsoft', 'Apple', 'IBM', 'Oracle', 'Amazon' ]
+// console.log(itCompanies)
+// console.log(itCompanies.length)
+// console.log(itCompanies[0])
+// console.log(itCompanies[3])
+// console.log(itCompanies[6])
+
+// itCompanies[0] = 'FACEBOOK'
+// itCompanies[1] = 'GOOGLE'
+// itCompanies[2] = 'MICROSOFT'
+// itCompanies[3] = 'APPLE'
+// itCompanies[4] = ' IBM'
+// itCompanies[5] = 'ORACLE'
+// itCompanies[6] = 'AMAZON'
+
+// console.log(itCompanies)
+
+function fullName(firstName, lastName) {
+    return firstName + ' ' + lastName;
+  }
+  
+  // Example usage:
+  console.log(fullName('John', 'Doe'));  // Output: John Doe
+  
+let num1 = 1
+let num2 = 2
+function addNumbers(){
+    return num1 + num2
+}
+
+console.log(addNumbers())
+
+// Question 4
+
+function areaOfCircle(r) {
+    return Math.PI * r * r;
+}
+let radius = 5;
+let area = areaOfCircle(radius);
+console.log("Area of the circle:", area)
+
+// Question 5
+
+function convertCelciusToFahrenheit(celsius){
+    return (celsius * 9 / 5) + 32;
+}
+
+let celsius = 25;
+let fahrenheit = convertCelciusToFahrenheit(celsius);
+console.log(celsius + "°C is equal to " + fahrenheit + "°F")
+
+// Question 6
+
+function bmiCalculate(weight, height) {
+    return weight / (height * height);
+   
+}
+ function categorizebmi(height, weight) {
+    let bmi = bmiCalculate(weight, height)
+
+    if (bmi < 18.5) {
+        return "Underweight";
+    } else if (bmi >= 18.5 && bmi < 25) {
+        return "Normal weight";
+    } else if (bmi >= 25 && bmi < 30) {
+        return "Overweight";
+    } else {
+        return "Obese"
+    }
+ }
+let weight = 18.5;
+let height = 1.40;
+let bmi = bmiCalculate(weight, height);
+console.log("your BMI is:", bmi)
+
+let category = categorizebmi(weight, height);
+console.log("This is considered:", category);
+
+
--- a/solutions/day-01/level1.js
+++ b/solutions/day-01/level1.js