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# jQuery deferred.progress() Method [jQuery Misc Methods](#) * * * ## Definition and Usage The `deferred.progress()` function adds a handler to be called when the Deferred object generates progress notifications. **Note:** When a Deferred object generates progress notifications by calling `notify` or `notifyWith`, the `progressCallbacks` are called. Since `deferred.progress()` returns the Deferred object, other Deferred methods can be chained to this object. When the Deferred object is resolved or rejected, the progress callback functions will no longer be called. * * * ## Syntax deferred.progress( progressCallbacks ) | Parameter | Description | | :--- | :--- | | _progressCallbacks_ | Function type. A function or an array of functions to be called when the Deferred object generates progress notifications. | * * jQuery Misc Methods](#)