MDN Web Docs Glossary: Definitions of Web-related terms

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JavaScript
JavaScript (JS) is a programming language mostly used to dynamically script webpages on the client side, but it is also often utilized on the server-side, using packages such as Node.js.

Web technologies contain long lists of jargon and abbreviations that are used in documentation and coding. This glossary provides definitions of words and abbreviations you need to know to successfully understand and build for the web.

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