Jquery promise

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  1. Deferred in jquery example

    2. Jquery ajax deferred promise example...

    JQuery .Deferred() method

    This JQuery.Deferred() method in JQuery  is a function which returns the utility object with methods which can register multiple callbacks to queues.

    Jquery when

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    6.  It calls the callback queues, and relay the success or failure state of any synchronous or asynchronous function.

    Syntax:

    jQuery.Deferred([beforeStart])
    • Parameters:
    • beforeStart: This is a function, which is called just before the constructor returns.

    Return Value: This method creates and returns a new deferred object.

    There are two examples discussed below:

    Example: In this example, the Deferred() is used to create a new object and after that then() method is called with notify and resolve method.

    Output:

    Example: In this example, the Deferred() method is used and the state of Deferred object is checked.

    Output: