Intro to JavaScript

 

                 Introduction to JavaScript

JavaScript is a versatile and widely used programming language that adds interactivity and dynamic behavior to websites. Initially designed for web browsers, it has evolved to become a server-side language as well. JavaScript enables developers to create responsive, user-friendly web applications by manipulating the Document Object Model (DOM) and interacting with browser APIs. It supports both procedural and object-oriented programming paradigms, making it a powerful tool for front-end and back-end development.

               Introduction to JavaScript

JavaScript is a versatile programming language primarily used for front-end web development. It allows you to make web pages interactive and dynamic. Here are some fundamental concepts:

1. Variables and Data Types:

Declare variables using var, let, or const.

Data types include numbers, strings, booleans, arrays, and objects.

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let age = 25;

let name = "John";

let isStudent = true;

let fruits = ['apple', 'banana', 'orange'];

let person = { firstName: 'John', lastName: 'Doe' };

2. Functions:

Define functions using the function keyword.

Functions can take parameters and return values.

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function add(a, b) {

    return a + b;

}

let result = add(3, 5);

3. Control Flow:

Use if, else if, and else for conditional statements.