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JavaScript ( / ˈdʒɑːvəskrɪpt / ), often abbreviated as JS, is a programming language and core technology of the Web, alongside HTML and CSS. 99% of websites use JavaScript on the client side for webpage behavior. [10] Web browsers have a dedicated JavaScript engine that executes the client code.
JavaScript is a high-level programming language that follows the ECMAScript standard. It was originally designed as a scripting language for websites but became widely adopted as a general-purpose programming language, and is currently the most popular programming language in use. [1]
Mar 5, 2024 · JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat.
Jun 22, 2023 · Where to find JavaScript information. The JavaScript documentation on MDN includes the following: Learn Web Development provides information for beginners and introduces basic concepts of programming and the Internet. JavaScript Guide (this guide) provides an overview about the JavaScript language and its objects.
Jan 24, 2024 · JavaScript is a scripting or programming language that allows you to implement complex features on web pages — every time a web page does more than just sit there and display static information for you to look at — displaying timely content updates, interactive maps, animated 2D/3D graphics, scrolling video jukeboxes, etc. — you can bet ...
Aug 8, 2022 · JavaScript was initially created as a browser-only language, but it is now used in many other environments as well. Today, JavaScript has a unique position as the most widely-adopted browser language, fully integrated with HTML/CSS. There are many languages that get “transpiled” to JavaScript and provide certain features.
Mar 31, 2024 · Weak typing. JavaScript is a weakly typed language, which means a data value doesn't need to be explicitly marked as a specific data type . Unlike a strongly typed language, JavaScript can infer the intended type from a value's context and convert the value to that type. This process is called type coercion.
