Book Image

Ext JS 4 Plugin and Extension Development

By : Abdullah Al Mohammad
Book Image

Ext JS 4 Plugin and Extension Development

By: Abdullah Al Mohammad

Overview of this book

Ext JS is a pure JavaScript application framework for building interactive web applications using techniques such as Ajax, DHTML, and DOM scripting. Ext JS 4 Plugin and Extension Development is a practical, step-by-step tutorial which guides you to learn and develop ExtJS plugins and extensions. There are a lot of examples with explanations and plenty of code provided to make it easier and quicker to pick up. Starting with the fundamentals, this book introduces some of the ExtJS library and community provided plugins and extensions and finishes with several hands-on, real world development examples. You will get a clear concept of ExtJS plugins and extensions and learn how to use them. You will also learn how to develop an ExtJS plugin and extension by going through several examples with code and screenshots. Ext JS 4 Plugin and Extension Development book will provide you with the knowledge to develop ExtJS plugins and extensions using real-life examples.
Table of Contents (16 chapters)
Ext JS 4 Plugin and Extension Development
About the Author
About the Reviewers

The SmartLegend extension

SmartLegend is an extension which implements the chart legend with a more advanced behavior, developed by Alexander Tokarev. This extension class is basically the same as Ext.chart.Legend, except that some of its methods were refactored for a better re-use.

Following is the screenshot of a chart where the SmartLegend extension is used:

The following are some of the features of SmartLegend:

  • The sizes of legend items are adjusted to the font size

  • Legend items can be configured to display any particular text, not only fixed series titles or values

  • Legend draws itself in several rows or columns, depending on the orientation

A live demo for this extension is located at extension is licensed under GPLv3. The download link, details of the copyright, and license for this extension are available at