The Ext JS framework includes the Ext.util.History component for managing the browser history that was first introduced in Ext 2.0 back in 2007. It’s pretty solid, and other than bug fixes it hasn’t changed much since then. In the reportcaster framework, all state changes while changing reports or drilling within reports is routed through a [...]

Ext JS provides many reusable components for use in Javascript applications that shield the developer from complex timer and/or asynchronous code. However, you may still find yourself writing timing or asynchronous code directly in your application code that you would be better off encapsulating in a class. Timer code is generally not pretty, bug prone [...]

In collaboration with Adobe, one of the key additions in Ext 2.0.2 was Adobe AIR 1.0 support for running in the application sandbox. Also, the Simple Tasks AIR application sample was rewritten to take advantage of more of the native functionality in AIR and gained some cool custom Ext components that can be used outside [...]

Interview with InfoQ http://www.infoq.com/news/2007/10/extjs20