Introduction to JavaScript

What is JavaScript?

JavaScript (JS) is a high-level, interpreted programming language primarily used for web development. It is one of the core technologies of the web, alongside HTML and CSS. JavaScript allows developers to create dynamic, interactive web pages by adding functionalities like animations, form validation, and API interactions.

Key Features of JavaScript:

• Client-Side Execution: JavaScript runs in the browser without requiring external support.
• Lightweight & Interpreted: No need for compilation; it executes code line by line.
• Event-Driven & Asynchronous: Handles events (clicks, keystrokes) and supports asynchronous programming via promises and async/await.
• Multi-Paradigm: Supports object-oriented, procedural, and functional programming styles.
• Cross-Platform: Works across different operating systems and browsers.
• Interoperability: Can interact with HTML and CSS to enhance web applications.

Common Uses of JavaScript:

• Creating interactive UI elements (buttons, sliders, modals).
• Handling form validations.
• Fetching and displaying data using APIs.
• Developing full-fledged web applications with frameworks like React, Angular, and Vue.js.
• Server-side programming with Node.js.

Setting Up JavaScript Development Environment

Before writing JavaScript, you need to set up a proper development environment. Here’s how you can get started:

1. Install a Text Editor or IDE