Shortly before Christmas, on 20. December, the final version of Firefox 9 is coming. At the moment the successor of Firefox Release 8 is still in beta phase. However, the few changes in Firefox 9 are worth mentioning. Because the project type inference (TI), an improvement in the JavaScript engine SpiderMonkey, was integrated. This is the preliminary analysis of JavaScript code, which that the performance can be significantly increased. According to the blog post of Firefox developer Brian Hackett it is an improvement over the common Kraken and V8 benchmarks at about 30%.

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