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Practical Ext JS 4 by Prabhu Sunderaraman

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CHAPTER 1

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Core JavaScript and JavaScript Frameworks

A lot of applications are being developed today using Ajax and HTML 5. Developing a rich web application can get really tedious, thanks to JavaScript. Building an application by writing JavaScript code that can be easily tested and maintained is not simple. It requires a great deal of coding discipline. Moreover we don’t want to be doing repetitive tasks like validating our forms, sending Ajax requests, manipulating the DOM, drawing, etc., in all our applications. And that’s the reason you have a number of JavaScript frameworks available today.

These JavaScript frameworks make life easier for ...

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