If you turn on a profiler in most of the apps we've built and click around like a user, after a while you'll notice jQuery.event.fix is often taking the most time (in the video below, it takes 6.34% of the total time). Following the logic behind Amdahl's law, it makes sense that making jQuery.event.fix faster would have the greatest impact on our apps. This article walks through:

This past Tuesday, at JSConf in Pheonix, Bitovi released CanJS (download). CanJS is the MVC parts of JavaScriptMVC, extracted into a single script download, with additional features that make it sizzle. There’s a lot of client-side MVC libraries out there, but this article will explain what sets CanJS apart from its competition.

There's a lot more to making JavaScript apps than writing JavaScript. StealJS is a collection of command and browser based JavaScript utilities that make building, packaging, sharing, and consuming JavaScript applications easy.

Last week we released Syn and mentioned how all testing solutions suffer from some fatal flaw. Today, we are releasing a beta of FuncUnit, which has "solved" JavaScript web application testing.