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This tutorial will walk through out how to add a tooltip to a Grid Header. This feature is not natively supported by Ext JS 4 API. Fortunately, there is a third-party plugin we can use to do it.
To get started, I created a JavaScript project on Eclipse IDE and it looks like this:
Plugin Code
The first thing we have to add (after Ext JS 4 SDK) is the plugin. To do so, I created a folder ux (for plugins) and a folder called gr...
