I was introduced to ExtJS a few months ago because I worked on a project that was heavily using the ExtJS 4 framework. Like many other frameworks, ExtJS had some really cool features, but also a few headaches. One headache I ran into was using the Ext.Ajax class to make a simple Ajax request. The Ext.Ajax class provides your basic event handling functionality for a successful/failed request. This class provides a timeout property that will execute an abort request when a certain amount of time has passed. However, I found that when a timeout does execute, a javascript error occurs. In Firebug, the error states:

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