Firefox 9 has been available to the public. One excellent feature of Firefox 9 is the type of interface for the SpiderMonkey JavaScript engine. Besides Firefox 9 also brings support for HTML5 and CSS standards. Mozilla wrote in his statement:
"Type Inference . boosts JavaScript performance and allow rich websites and web apps with lots of pictures, videos, games and 3D graphics to load and run much faster Type inference is a feature of the SpiderMonkey JavaScript engine That integrates with the JaegerMonkey JIT compiler to Provide analysis and help generate more efficient code. Type Inference with Firefox is up to 30% speedier on JavaScript benchmarks and V8 like Kraken. "
Moziila have made 3 pieces of synthetic benchmark that is made of their own called the Kraken, a modification of Google's. V8 and SunSpider to demonstrate the ability of Firefox 9. The result is clay that you may the latest version of Firefox may create your browsing run 30% faster than previous versions. Besides Firefox 9 also supports chunking XHR requests. Where if we visit an AJAX site will instantly be shown once content is arrived at, although not done downloading completely. This makes browsing seemed to run faster.