These guys are just doing it RIGHT…
Here is a short (relatively) presentation that give you the highlights from the jQuery Conf. that took place in Boston last weekend.
I personally like the new separation that we now see in the core.js and of course the new selector engine (Sizzle). As we all know – faster === happy users.
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As for more generic topic of Java Script Testing – here is a very good intro:
I’m strong believer in test driven development and the option to do it with better methodology and tools is most welcome.