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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.
A JavaScript engine is a software component that executes JavaScript code. The first JavaScript engines were mere interpreters, but all relevant modern engines use just-in-time compilation for improved performance. [1] JavaScript engines are typically developed by web browser vendors, and every major browser has one.
Node.js is a cross-platform, open-source JavaScript runtime environment that can run on Windows, Linux, Unix, macOS, and more. Node.js runs on the V8 JavaScript engine, and executes JavaScript code outside a web browser. Node.js lets developers use JavaScript to write command line tools and for server-side scripting.
This article compares browser engines, especially actively- developed ones. [a] Some of these engines have shared origins. For example, the WebKit engine was created by forking the KHTML engine in 2001. [1] Then, in 2013, a modified version of WebKit was officially forked as the Blink engine. [2]
V8 (JavaScript engine) V8 is a JavaScript and WebAssembly engine developed by Google for its Chrome browser. [1][4] V8 is free and open-source software that is part of the Chromium project and also used separately in non-browser contexts, notably the Node.js runtime system. [1]
Tamarin: An ActionScript and ECMAScript engine used in Adobe Flash. V8: A JavaScript engine used in Google Chrome and other Chromium -based browsers, Node.js, Deno, and V8.NET. GNU Guile features an ECMAScript interpreter as of version 1.9. Nashorn: A JavaScript engine used in Oracle Java Development Kit (JDK) since version 8.
JSFiddle is an online IDE which is designed to allow users to edit and run HTML, JavaScript, and CSS code on a single page. [3] Its interface is minimalist and split into four main frames, which correspond to editable HTML, JavaScript and CSS fields and a result field which displays the user's project after it is run. [3] Since early on, JSFiddle adopted smart source-code editor with ...
JavaScript can be used in a web browser to display the user interface (UI), run application logic, and communicate with a web server. Mature free libraries are available that support the building of a SPA, reducing the amount of JavaScript code developers have to write.