Book Image

Learning Ext JS 3.2

By : Shea Frederick, Colin Ramsay, Steve 'Cutter' Blades, Nigel White
Book Image

Learning Ext JS 3.2

By: Shea Frederick, Colin Ramsay, Steve 'Cutter' Blades, Nigel White

Overview of this book

<p>As more and more of our work is done through a web browser, and more businesses build web rather than desktop applications, users want web applications that look and feel like desktop applications. Ext JS is a JavaScript library that makes it (relatively) easy to create desktop-style user interfaces in a web application, including multiple windows, toolbars, drop-down menus, dialog boxes, and much more. Yet, most web developers fail to use this amazing library to its full power.</p> <p>This book covers all of the major features of the Ext framework using interactive code and clear explanation coupled with loads of screenshots. Learning Ext JS will help you create rich, dynamic, and AJAX-enabled web applications that look good and perform beyond the expectations of your users.</p> <p>From the building blocks of the application layout, to complex dynamic Grids and Forms, this book will guide you through the basics of using Ext JS, giving you the knowledge required to create rich user experiences beyond typical web interfaces. It will provide you with the tools you need to use AJAX, by consuming server-side data directly into the many interfaces of the Ext JS component library. You will also learn how to use all of the Ext JS widgets and components smartly, through interactive examples.By using a series of straightforward examples backed by screenshots, Learning Ext JS 3.2 will help you create web applications that look good and perform beyond the expectations of your users.</p>
Table of Contents (22 chapters)
Learning Ext JS 3.2
Credits
About the Authors
About the Reviewers
Preface

Summary


Getting a feature-rich tree interface such as Ext.tree.TreePanel up and running in eleven lines of code is pretty impressive, and we've shown that it is possible. Over and above that, this chapter has demonstrated that the strength of the TreePanel is not simply in its ease of use, but in the way we can use its wealth of configuration options to deliver application-specific functionality.

The use of asynchronous loading is an important feature of the TreePanel, because it provides a way of consuming large amounts of dynamic data in a scalable fashion. It's also handled transparently by Ext.tree, which means that the implementation is as beneficial for the developer as it is for the end user. And no matter what backend you're using, a custom Ext.tree.TreeLoader can consume JSON and XML in any format.

Despite all of their power, the Ext.tree classes still manage to feel pretty lightweight in use. It's easy to tame that power by using the configuration options, the methods, and the events...