Course Modules
Introduction to JavaScript
Learn the fundamentals of JavaScript programming language
What is JavaScript?
Setting up your development environment
Basic syntax and data types
Variables and constants
Objects and Arrays
Master JavaScript objects and arrays
Working with Arrays
Array Methods
Object Creation
Object Properties
Functions & Scope
Understanding functions and variable scope in JavaScript
Function declarations
Arrow functions
Function parameters
Variable scope and closures
Understanding Variables and Data Types
Variables are containers for storing data values. JavaScript provides several ways to declare variables and supports various data types to handle different kinds of information.
Variable Declarations
// Variable declarations
let name = "John"; // String
const age = 25; // Number
var isStudent = true; // Boolean
let scores = [85, 92, 78]; // Array
let person = { // Object
name: "John",
age: 25
};Data Types
// JavaScript Data Types
let string = "Hello"; // String
let number = 42; // Number
let boolean = true; // Boolean
let array = [1, 2, 3]; // Array
let object = {}; // Object
let nullValue = null; // Null
let undefinedValue; // UndefinedModern JavaScript Features
// Modern JavaScript Features
const PI = 3.14; // Constants
let [x, y] = [1, 2]; // Array Destructuring
let { name, age } = person; // Object Destructuring
let sum = (...nums) => nums.reduce((a, b) => a + b); // Rest Parameters