JavaScript

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Description
JavaScript is one of the three core technologies of the World Wide Web which also includes HTML and CSS. JavaScript is used to make dynamic webpages interactive and provide online programs, including video games. Most website on the internet use some form of JavaScript on their sites, and all modern web browsers support it without the need for plug-ins by means of a built-in JavaScript engine. Each of the many JavaScript engines represent a different implementation of JavaScript, all based on the ECMAScript specification, with some engines not supporting it fully, and with many engines supporting additional features beyond ECMA.