SpiderMonkey - WikipediaSpiderMonkey is an open-source JavaScript and WebAssembly engine by the Mozilla Foundation.[4] It is the first JavaScript engine, written by Brendan Eich at Netscape Communications, and later released as open source and currently maintained by the Mozilla Foundation. It is used in the Firefox web browser. Eich "wrote JavaScript in ten days" in 1995,[5] having been "recruited to Netscape with the p
