Which of the following technique will not help improve Ext JS performance?

The ____ validation verifies if the length of the given value is between the min and the max values. The min and the max configuration are optional.

Ext.util.Sorter can only be applied to which object?

What action does the remove() function perform?

To enable grid buffering,

Which one of the following is a valid way to get DOM elements using Ext?

What region type is required for border layout?

What is the difference between theming and styling in Ext?

What are the 4 folders that a developer should create to employ the recommended MVC architecture in Ext?

What is a RESTful store in Ext?

What is theme inheritance?