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摘要： 3.0.1的更改还不少：Release Notes for Ext 3.0.1Release Date: Aug 20, 2009Current Version: 3.0.1 (rev 5073) Previous Version: 3.0.0 (rev 4750)ChangesExt.Button Since we're reassigning the id ofthe element, we need to update the cache. If we don't andenableListenerCollection is true, it will remove th 阅读全文