Extending, Unit Testing, and Packaging

In the first nine chapters of this book we have analyzed various features of Ext JS 4. You learned how to use the UI controls, work with data components, create custom themes, and build applications that follow the MVC architecture. In this chapter you’ll find out about some miscellaneous features in Ext JS 4. For example, you’ll see how to extend the UI controls by creating custom components. I’ll discuss various options involved in creating custom components and plugins. You’ll also learn how to write unit tests in JavaScript to test our Ext JS 4 application. Finally you’ll learn how to create ...

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