[4][3] The first JavaScript engine was created by Brendan Eich in 1995 for the Netscape Navigator web browser.
[5]) Google debuted its Chrome browser in 2008, with the V8 JavaScript engine that was faster than its competition.
[7][8] The key innovation was just-in-time compilation (JIT), which Mozilla had also been working on for SpiderMonkey.
[9] Because of V8's performance, the other browser vendors needed to overhaul their engines for JIT.
[10] Apple developed the Nitro engine for its Safari browser, which had 30% better performance than its predecessor.