The folks at Mozilla have souped up JavaScript with a new just-in-time compilation scheme in a project known as TraceMonkey, which boosts JavaScript performance as much as 22.5 times depending on which benchmarks and tests you use.

Brendan Eich, chief technology officer at Mozilla, called the technology a game changer and said TraceMonkey moves the goal posts for JavaScript developers.

Like other dynamic languages such as Ruby and Perl, JavaScript has suffered from issues of poor performance compared with statically typed languages. TraceMonkey helps overcome those performance issues. Mike Schroepfer, former vice president of engineering at Mozilla, who now works at Facebook, developed a demo to show how TraceMonkey improves JavaScript performance.

Moreover, in a blog post, Eich said, "I'm extremely pleased to announce the launch of TraceMonkey, an evolution of Firefox's SpiderMonkey JavaScript engine for Firefox 3.1 that uses a new kind of Just-In-Time (JIT) compiler to boost JS performance by an order of magnitude or more."

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