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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.
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]
However, since features were added in that edition to enable full asm.js support (Math.fround()), older browsers lacking those features may encounter problems. Some browser implementations are especially optimised for asm.js: Mozilla Firefox was the first web browser to implement asm.js-specific optimizations, starting with Firefox 22. [3]
The first JavaScript engine was created by Brendan Eich in 1995 for the Netscape Navigator web browser. [5] It was a rudimentary interpreter for the nascent language Eich invented. [6] (. This evolved into the SpiderMonkey engine, still used by the Firefox browser. [5]) Google debuted its Chrome browser in 2008, with the V8 JavaScript engine ...
Polyfill (programming) In software development, a polyfill is code that implements a new standard feature of a deployment environment within an old version of that environment that does not natively support the feature. Most often, it refers to JavaScript code that implements an HTML5 or CSS web standard, either an established standard ...
JavaScript. Python. MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center, is a documentation repository and learning resource for web developers. It was started by Mozilla in 2005 [1] as a unified place for documentation about open web standards, Mozilla's own projects, and developer guides.
JavaScript and XML. Ajax (also AJAX / ˈeɪdʒæks /; short for " asynchronous JavaScript and XML " [ 1 ][ 2 ]) is a set of web development techniques that uses various web technologies on the client-side to create asynchronous web applications. With Ajax, web applications can send and retrieve data from a server asynchronously (in the ...