Why Extjs?

There are many JavaScript framework available. So definitely before selecting ExtJs we like to know Why Extjs?

• Ext is a cross browser JavaScript framework that allows for the creation of RIA (Rich Internet Applications).
  

• Ext uses web 2.0 methods, i.e. ajax, which has built in parsers for JSON, XML, text formats.
  

• Ext allows for the creation of Rich UI with simple notation. Which result in rapid deployment of interfaces and only to focus on getting the data to the front end.
  

• At last but not the least, I like most about this is it allow you to Customize [extend/override] the component as per the requirement without changing basic nature of JavaScript.

finally, I must say that Ext is a great product with a bright future.