You should check out SproutCore's CoreQuery: http://docs.sproutcore.com/symbols/SC.CoreQuery.html#constructor http://docs.sproutcore.com/symbols/SC.CoreQuery.ht

You should check out SproutCore's CoreQuery: http://docs.sproutcore.com/symbols/SC.CoreQuery.html#constructor http://docs.sproutcore.com/symbols/SC.CoreQuery.html#constru... It's a subset of jQuery that they've extracted and baked in with the rest of SproutCore's UI elements. They've also introduced a way to design your UI with state charts (very cool). Of course, there's also nothing preventing you from just using the full jQuery library with SproutCore.