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Learning Ext JS - Fourth Edition by Armando Gonzalez, Crysfel Villa, Carlos A. Méndez

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Getting started with Ext JS

So, let's begin with Ext JS! The first thing we should do is download the framework from the official website, http://www.sencha.com/products/extjs/. The version available at the time of writing this book is 5.1.1.

There are three types of license:

  • The open source license: If you are creating or want to develop an open source application compatible under the GNU GPL license v3 (http://www.gnu.org/copyleft/gpl.html).
  • The commercial license: You need to buy this if you are planning/wanting to develop a closed source project and want to keep the source code as your own property. Usually used by corporations, banks, or enterprises.
  • The commercial OEM: If you want to use Ext JS to create your own commercial SDK or web application ...

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