jQuery, default callback for ajax requests before any request?

Question

I have many $.post, $.ajax call, they all returns with a JSON array. I realized that sometimes I have to check status codes, e.g. check if user is dropped. Thats ok, but now I have to put this status-check for all occurrences. By accindent, cant I set a default callback somehow?

what about the beforeSend option? api.jquery.com/jquery.ajax — cl3m
– cl3m, Commented Mar 21, 2016 at 13:00
why the down vote, its a legitimiate question. @john smith, your best bet would be to wrap your post or ajax call inside a function, and handle everything there — Neta Meta
– Neta Meta, Commented Mar 21, 2016 at 13:01
You can wrap those function with yours, something like this: stackoverflow.com/questions/15531722/… — Mosh Feu
– Mosh Feu, Commented Mar 21, 2016 at 13:01
api.jquery.com/jquery.ajaxsetup - This allows you to set up default callbacks. — Rocker1985
– Rocker1985, Commented Mar 21, 2016 at 13:05

amrit sandhu · Accepted Answer · 2016-03-21 13:20:06Z

1

You can use beforesend method of AJAX

beforeSend: function (xhr) {
    // It will fired each just before each AJAX request
    }

answered Mar 21, 2016 at 13:20

amrit sandhu

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Divyesh · Accepted Answer · 2016-03-21 13:33:02Z

1

$.ajax({
        url: '',
        beforeSend: function ()
        {
                 // Here your code it fired just before ajax request
        },
        data: {

        },
        success: function (data) {
        }
        })

answered Mar 21, 2016 at 13:33

Divyesh

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BenG · Accepted Answer · 2016-03-21 14:26:34Z

1

You can use:-

.ajaxSend()

Description: Attach a function to be executed before an Ajax request is sent. This is an Ajax Event. Whenever an Ajax request is about to be sent, jQuery triggers the ajaxSend event. Any and all handlers that have been registered with the .ajaxSend() method are executed at this time.

.ajaxSend( handler )

Type: Function( Event event, jqXHR jqXHR, PlainObject ajaxOptions ) The function to be invoked.

Usage:-

$(document).ajaxSend(function( event, jqxhr, settings ) {
   // This will be fired before all ajax requests
});

NOTE

If $.ajax() or $.ajaxSetup() is called with the global option set to false, the .ajaxStart() method will not fire.

edited Mar 21, 2016 at 14:26

answered Mar 21, 2016 at 14:10

BenG

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