As we all know, the web has always been dominated by either jQuery, scriptaculous and MooTools, just to name a few.

Ext JS is yet another JavaScript library which can be used to build rich internet applications. Check out the samples, I am pretty impressed on what it can do.

Here is a description of the book:

Using Ext JS you can easily build desktop-style interfaces in your web applications. Over 400,000 developers are working smarter with Ext JS and yet most of them fail to exercise all of the features that this powerful JavaScript library has to offer.

Get to grips with all of the features that you would expect with this quick and easy-to-follow Ext JS Cookbook. This book provides clear instructions for getting the most out of Ext JS with and offers many exercises to build impressive rich internet applications. This cookbook shows techniques and “patterns” for building particular interface styles and features in Ext JS. Pick what you want and move ahead.

It teaches you how to use all of the Ext JS widgets and components smartly, through practical examples and exercises. Native and custom layouts, forms, grids, listviews, treeviews, charts, tab panels, menus, toolbars, and many more components are covered in a multitude of examples.The book also looks at best practices on data storage, application architecture, code organization, presenting recipes for improving them—our cookbook provides expert information for people working with Ext JS.

Ext JS 3.0 Cookbook