jQuery ajax call returns empty error if the content is empty

Question

I call the getResult() function everytime when res.reply = 2, but there are cases that res is empty. When the returned value is empty console.log("error") is invoked. This works in older versions of jQuery Mobile. Now the version is 1.3.2.

function getResult()
{
    request = $.ajax({
        type: "POST",
        url: url,
        dataType: "json",
        data: {
            ....
        },
        error: function() {         
            console.log("error");
        },
        success: function(res) {
            if(res.reply=='2') {
                getResult();
            }         
        }
    });
}

Expecting help with jQuery 1.3.2 is a little... optimistic. Why don't you use a current version? — lonesomeday
– lonesomeday, Commented Aug 14, 2013 at 12:08
Hitting the error handler does not necessarily mean the response is empty - it most commonly means that a response could not be retrieved due to an error on the server. Check the network traffic in Firebug and your server logs for an error. — Rory McCrossan
– Rory McCrossan, Commented Aug 14, 2013 at 12:11
What error you are receiving ..you can check with error : function (xhr,err){ console.log(xhr);console.log(err); } — Pranav
– Pranav, Commented Aug 14, 2013 at 12:11
console.log(xhr);console.log(err); returns Object { readyState=4, status=200, statusText="OK"} search...mbers=1 (line 136) parsererror — user2632980
– user2632980, Commented Aug 14, 2013 at 12:27

Mr.Manhattan · Accepted Answer · 2017-03-20 12:34:26Z

29

dataType: "json"

means: give me json, nothing else. an empty string is not json, so recieving an empty string means that it wasn't a success...

request = $.ajax({
    type: "POST",
    url: url,
    data: {
        ....
    },
    error: function() {         
        console.log("error");
    },
    success: function(res) {
        var response = jQuery.parseJSON(res);
        if(typeof response == 'object'){
            if(response.reply == '2') {
                getResult();
            }  
        } else {
              //response is empty 
        }
    }
});

edited Mar 20, 2017 at 12:34

answered Aug 14, 2013 at 14:46

Mr.Manhattan

5,5543 gold badges26 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

jackocnr · Accepted Answer · 2014-01-13 23:12:06Z

0

Looks like normally you do want a JSON response, so I wouldn't change your dataType to "text", instead I would get the server to return a valid JSON response even when the response is empty e.g. "{}" instead of "".

answered Jan 13, 2014 at 23:12

jackocnr

17.4k10 gold badges57 silver badges63 bronze badges

Collectives™ on Stack Overflow

jQuery ajax call returns empty error if the content is empty

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related