Question

While trying to GET a JSON, my callback function is NOT firing.

$.ajax({
    type:"GET",
    dataType:'json',
    url: myLocalURL,
    data: myData,
    success: function(returned_data) { 
        alert('success');
    }
});

The strangest part of this is that:

1. my JSON(s) validates on JSONlint
2. this ONLY fails on IE7…it works in Safari, Chrome, and all versions of Firefox, (and even in IE8). If I use ‘error’, then it reports “parseError”…even though it validates!

Is there anything that I’m missing? Does IE7 not process certain characters, data structures (my data doesn’t have anything non-alphanumeric, but it DOES have nested JSONs)? I have used tons of other AJAX calls that all work (even in IE7), but with the exception of THIS call.

An example data return here is: (this is a structurally-complete example, meaning it is only missing a few second-tier fields, but follows this exact hierarchy)

{"question":{
             "question_id":"19",
             "question_text":"testing",
             "other_crap":"none"
            },
  "timestamp":{
              "response":"answer",
              "response_text":"the text here"
              }
}

I am completely at a loss. Hopefully someone has some insight into what’s going on…thank you!

EDIT
Here’s a copy of the SIMPLEST case of dummy data that I’m using…it still doesn’t work in IE7.

{
  "question":{
         "question_id":"20",
         "question_text":"testing :",
         "adverse_party":"none",
         "juris":"California",
         "recipients":"Carl Chan"
         }
}

I am starting to doubt that it is a JSON issue…but I have NO idea what else it could be. Here are some other resources that I’ve found that could be the cause, but they don’t seem to work either:
http://firelitdesign.blogspot.com/2009/07/jquerys-getjson.html (Django uses Unicode by default, so I don’t think this is causing it)

Anybody have any other ideas?

Answer 1

The example data you present looks all right but my strong suspicion still is that there is an unclosed comma somewhere like this:

 "timestamp":{
              "response":"answer",
              "response_text":"the text here"
              }, <------------
}

IE is the only browser that (correctly) trips over this.

If this is not it, can you show a full data sample (or confirm that the example you show is indeed a full sample)?