a colleague suggested I give this framework a try. My question is, does anyone have any feedback about this, is it better than using JQuery
UPDATE: I found this posting which partially answers some of my questions
How different is Ext JS from others like jQuery and Mootools
There are two parts to the Ext framework. Ext Core was invented as a jQuery competitor but honestly if you’re trying to do what jQuery does, just use jQuery. It’s more popular, it’ll be easier to find answers, etc.
ExtJS is a full-blown RIA framework with a rich library of widgets. You might say that it competes with jQuery UI but jQuery UI is a much less rich set of components so they’re not really competitors as such.
Also, ExtJS is released under either the GPL or a commercial license. You may find that to be a problem.
For rich Javascript frameworks, I tend to favour YUI or possibly SmartClient.