JavaScript is a high-level, versatile programming language commonly used to add interactivity and dynamic features to websites. It enables features like real-time updates, form validations, animations, and event handling. JavaScript runs on the client-side (in the browser) but can also be used on the server-side with platforms like Node.js. It is widely supported across all modern web browsers and is essential for web development.

What can we do with JavaScript

With JavaScript, you can:

1. Create interactive websites: Add dynamic content, form validation, animations, and event handling (e.g., clicks, keypresses).
2. Manipulate HTML/CSS: Modify webpage structure, style, and content in real-time using the DOM (Document Object Model).
3. Handle data: Fetch, process, and display data using APIs, including real-time updates through AJAX or fetch requests.
4. Build web apps: Create full-scale applications using frameworks like React, Angular, or Vue.
5. Server-side development: Use JavaScript with Node.js to build backend services and APIs.
6. Game development: Build browser-based games using JavaScript and HTML5.
7. Mobile/desktop apps: Develop cross-platform apps using frameworks like React Native or Electron.