Description: Add handlers to be called when the Deferred object is rejected.
Arguments
deferred.fail( failCallbacks )
version added: 1.5
doneCallbacks
A function, or array of functions, that are called when the Deferred is rejected.
The argument can be either a single function or an array of functions. When the Deferred is rejected, the failCallbacks are called. Callbacks are executed in the order they were added. Since
deferred.fail() returns the deferred object, other methods of the deferred object can be chained to this one, including additional deferred.fail() methods. The failCallbacks are executed using the arguments provided to the deferred.reject() or deferred.rejectWith() method call in the order they were added. For more information, see the documentation for Deferred object.Example
Since the jQuery.get method returns a jqXHR object, which is derived from a Deferred, you can attach a success and failure callback using the deferred.done() anddeferred.fail() methods.
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