Question

I have the following jquery in my code$j.getJSON("http://localhost:8080/WWTestHarnessWEB/ReadersToolkitFinalController.htm?jsoncallback=?", {'uID': 1}, function(data){alert(data);});

The json that i am returning looks like the following ({"positiveCount":"0","negativeCount":"999"})

But my alert is never firing.

Any idea what i need to do to ensure that this will work?

regards
Damien

Answer 1

I believe that if you’re using a different name for the callback query string parameter than callback (looks like you’re using jsoncallback instead), you have to tell jQuery; see the jsonp parameter in the options object on the $.ajax call. This means you’ll have to use ajax instead of getJSON, but that’s easy enough.

E.g.:

$.ajax({
  url:      "http://localhost:8080/WWTestHarnessWEB/ReadersToolkitFinalController.htm?jsoncallback=?",
  dataType: "json",
  jsonp:    "jsoncallback",
  data:     {'uID': 1},
  success:  function(data){alert(data);}
});

I’m not sure whether you need to (or should) include the “jsoncallback=?” in the URL yourself or let jQuery put it in; a quick experiment should tell you.