JavaScript (JS) is a programming language that's essential for creating dynamic and interactive websites. Alongside HTML and CSS, JavaScript is one of the core technologies of the World Wide Web. By 2022, around 98% of websites use JavaScript on the client side to enhance web page behavior, often with the help of third-party libraries. Every major web browser comes with a built-in JavaScript engine to run JavaScript code directly on your device.
JavaScript is a high-level language, often compiled just-in-time, and follows the ECMAScript standard. It features dynamic typing, prototype-based object orientation, and first-class functions. You can use JavaScript in various programming styles, including event-driven, functional, and imperative programming. It also provides APIs for tasks like manipulating text, dates, regular expressions, data structures, and interacting with the Document Object Model (DOM).
However, the ECMAScript standard itself doesn't cover input/output (I/O) tasks like networking, storage, or graphics. These features are provided by the web browser or another runtime environment.
While JavaScript was initially designed to run only in web browsers, it has since evolved. Now, it's a key part of server-side programming and other applications, with Node.js being the most popular runtime system for this broader use.
JavaScript is the world's most popular programming language and the language of the web. It's also easy to learn. In this tutorial, you'll go from the basics to more advanced JavaScript concepts.
22 сен 2024
