JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript specification. It is a foundational technology for the web, all modern websites have some JavaScript code in them. JavaScript is great for manipulating the Document Object Model (DOM) and handling events, as well as for creating interactive web applications.
Features of JavaScript
- Dynamic Typing: JavaScript is dynamically typed, which means you don't have to declare the type of a variable when you declare it.
- Object-Oriented: JavaScript is an object-oriented language. It has a variety of built-in objects like
String
,Array
,Object
, etc. - Event-Driven: JavaScript is event-driven, meaning it responds to events such as clicks, mouse movements, key presses, etc.
Common Use Cases
- DOM Manipulation: Changing the content, style, and structure of web pages.
- Asynchronous Programming: Using
XMLHttpRequest
or thefetch
API to send and receive data from a server without reloading the page. - Building Web Applications: Using frameworks like React, Angular, and Vue.js to create interactive and responsive web applications.
Learning Resources
- MDN Web Docs - JavaScript: The MDN Web Docs provide comprehensive documentation for JavaScript.
- JavaScript.info: A website with tutorials and articles to help you learn JavaScript.
JavaScript Logo
Additional Links
If you're looking to delve deeper into JavaScript, check out our JavaScript tutorials section.