The ________ validation varifies is the value is present (0(zero) is a valid value,but an empty string is not).

What is the proper syntax to set up global theme variables in Ext?

What is the event name that fires when a user checks a checkbox in Ext 4.0?

Which statement about the emptyCellText is false?

What method can be use to retrieve a DOM element?

Which of the following statements about the collapseMode option is incorrect?

True or false? Ext Js supports all major web browsers including: IE 6+,Firefox 1.5+(Pc,Mac),Safari 3+,Opera9+(Pc,Mac).

What is the name of the method on an Ext.data.store that synchronizes the records in the store with a remote data source?

The LocalStorageProxy uses the new HTLM5 localStorage API to load and save data into the client brwoser

Extjs 4.x includes a new pattern concept named MVC.

Why would a developer use buffered scrolling?