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jQuery 1.7 Released

Nov 04, 2011, 15:00 (0 Talkback[s])

"Event delegation has become increasingly important as size and complexity of pages grow. Application frameworks such as Backbone and Sproutcore make heavy use of event delegation. With that in mind, jQuery 1.7 event handling was refactored with an eye to making delegated events much faster, especially for the most common cases.

To optimize the code for the most commonly used forms of selectors, we examined a cross-section of code from Google Codesearch. Nearly two-thirds of the selectors used in .live() and .delegate() method calls were in the form tag#id.class where one or more of tag, id, or class were used.

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