What is your experience with Ext JS for building web applications, and what improvements would you suggest?

Para que é usado o Ext JS?

How do you use Sencha ExtJS?

Is ExtJS dead?

Who introduced first version of Ext JS?

What is Ext JS framework?

Why do you think I should do web applications with extjs? Especially for a page that needs to be refreshed, and everything with AJAX? In such applications, debug works with 'click'. It can take a lot. But ultimately you can't hit the bug fix or see it refresh in the browser. Why is this necessary?

Currently Sencha Themer is available for all customers and that is a good thing. But I as a dedicated "lone wolf" customer will never become an enterprise customer. In that case I never have the benefit of using enterprise products. I don't even care at the moment of testing them, for if I like... Leia mais

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I would like to learn more about how various EXT-JS Users do the Migration from previous version to newer version and what has been their experience.