It is our hope that, with this brief introduction to the Ext JS JavaScript component library and framework, we've given our readers a good foundation upon which some truly amazing things can be built some truly amazing things. Ext JS provides such an immense wealth of user interactivity within web applications, possibly to a degree never achieved before. With its deep, consistent, and rich component set, its full-featured and intuitive API, and its constant development and growth, Ext JS has the potential to truly springboard web (and even desktop) applications beyond the traditional paradigms, by providing users with an experience well beyond the web applications of the past.
Our imagination is the only limit to what we can hope to have in the future.
Charles F. Kettering
US electrical engineer and inventor (1876 - 1958)