index.js

// 01.Write a single line comment which says, comments can make code readable
// comments can make code readable

// 02.Write another single comment which says, Welcome to 30DaysOfJavaScript
// Welcome to 30DaysOfJavaScript

// 03.Write a multiline comment which says, comments can make code readable, easy to reuse and informative
/*
comments can make code readable, 
easy to reuse and informative
*/

// 04.Create a variable.js file and declare variables and assign string, boolean, undefined and null data types

// let firstName = "erman"
// true
// undefined
// null

// 05.Create datatypes.js file and use the JavaScript typeof operator to check different data types. Check the data type of each variable

// let firstName = "erman"
// true
// undefined
// null


// console.log(typeof firstName)
// console.log(typeof true)
// console.log(typeof undefined)
// console.log(typeof null)

// 06.Declare four variables without assigning values
// let firstName
// let lastName
// let age
// let location

// 07.Declare four variables with assigned values
// let firstName = "erman"
// let lastName = "Junaidi"
// let age = 40
// let location = "Semarang"

// 08.Declare variables to store your first name, last name, marital status, country and age in multiple lines
// let firstName = "erman"
// let lastName = "Junaidi"
// let maritalStatus = "married"
// let age = 40

// 09.Declare variables to store your first name, last name, marital status, country and age in a single line
// let firstName = "erman", lastName = "junaidi", maritalStatus = "married", age = 40
// console.log(firstName, lastName, maritalStatus, age)

// 10.Declare two variables myAge and yourAge and assign them initial values and log to the browser console.
// let myAge = 40
// let yourAge = 30
// console.log(myAge, yourAge)