CODEWITHSUNDEEP
jqueryajaxasynchronous
Maulik Vora
Maulik Vora

Reputation: 2584

jQuery ajax call with async false is not working

Here I have pasted my code, I want to return the response of $.ajax as response of function a(). But before the result comes up of ajax call, it is returning the empty f. please help on this

a = function()
{
        var f = '';
    $.ajax({
          url: 'http://api.twitter.com/1/statuses/user_timeline.json?screen_name=immaulikvora&count=1&page=1&include_entities=1&callback=?',
          dataType: 'json',
          async: false,
          success: function(data) {
            f = data;
          }
        });    
    return f;
};


var lid = a();

alert(lid);

Upvotes: 8

Views: 44703

Answers (3)

Murali Murugesan
Murali Murugesan

Reputation: 22619

Please assign the ajax to jqXHR object and reading the responseText will help you.

 var jqXHR=$.ajax({
      url: 'http://api.twitter.com/1/statuses/user_timeline.json?screen_name=immaulikvora&count=1&page=1&include_entities=1&callback=?',
      dataType: 'json',
      async: false
    });    

jqXHR.responseText // This will give you the result

Upvotes: 14

b_levitt
b_levitt

Reputation: 7415

Unless you work for twitter, I would assume it is failing because "Cross-domain requests and dataType: "jsonp" requests do not support synchronous operation."

Deprecated != removed and even if it did I take the deprecation is in the context of the returned jqXHR which are not being used here.

http://api.jquery.com/jQuery.ajax/

It looks like @Murali provides a work-around, but the above is important to point out for those having issue with same-domain requests.

Upvotes: 4

Rick Su
Rick Su

Reputation: 16440

I guess you are using jQuery 1.8+

http://api.jquery.com/jQuery.ajax/

Please read the fine print.

As of jQuery 1.8, the use of async: false with jqXHR ($.Deferred) is deprecated;

you must use the complete/success/error callbacks.

try

http://jsfiddle.net/UgrLE/

Upvotes: 8

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