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Synchronous calls with jquery

Can I make use of jQuery AJAX API and make a synchronous calls?

like image 833
keshav84 Avatar asked May 31 '10 09:05

keshav84


2 Answers

Like Obama would say: YES YOU CAN !

jQuery .ajax()

Setting

async = false

within the .ajax() handler will do the trick.

like image 122
jAndy Avatar answered Oct 23 '22 12:10

jAndy


While jQuery can make sync AJAX calls by setting the synch:false property, this causes the browser to hang until the AJAX completes. Using a flow control library like Frame.js enables you to make synchronous calls without tying up the browser:

$.each(ajaxObjects, function(i, ajaxCall){
    Frame(function(next)){ // declare the callback next here

        ajaxCall.complete = function(data){
            // do something with the data
            next(); // go to the next ajax call
        }
        $.ajax(ajaxCall);

    });
}
Frame.init();

This series of AJAX calls will be made in order, each waiting for the previous to complete, without making the browser hang. Also has the added benefit that the data returns from the ajax calls in a predictable order, as opposed to asynchronous calls which return in a random order.

like image 33
BishopZ Avatar answered Oct 23 '22 13:10

BishopZ