I am involved in a project development using Java Script. The data will be available to me as JSON objects. I am looking at ExtJS , Smartclient as possible candidates. I should say I am leaning towards the Ext JS framework after working through few examples. I like the out of the box Web Desktop. I might be developing some thing like that. Can I have honest suggestion on whether it will be easier to use JSON objects as a data source for Ext JS?