JavaScript - WikipediaJavaScript (JS)[a] is a programming language and core technology of the Web, alongside HTML and CSS. It was created by Brendan Eich in 1995.[6] As of 2025, the overwhelming majority of websites (98.9%) uses JavaScript for client side webpage behavior.[10] Web browsers have a dedicated JavaScript engine that executes the client code. These engines are also utilized in some servers and a variety of
