Ext JS was developed by a unified team of programmers working toward a single
goal—to provide a consistent core user interface and interaction library. Because of
this, the code used for different functionalities and widgets is more coherent than in
some other JavaScript libraries. Ext JS really shines in making web applications easyto-
use and intuitive. If you are a web application developer, it's a great library to
have in your arsenal.
We start by outlining how to download and configure the Ext JS library. Covering
everything from the simplest alerts to complex grids, layouts, and forms, this book
will enable you to start creating rich, interactive web applications.
We will use plenty of real-world examples that can be applied immediately to your
ongoing projects. Sample code is broken down to its simplest form, allowing us to
concentrate on learning the usage of the library. By the end of this book, we will end
up with a sample application that uses the full spectrum of Ext JS components.