[Django]-JQuery.getJSON doesn't trigger callback

It is likely that the json is not properly formed. Sometimes this happens to me when my code, that should be producing json is generating an error. Two options:

• Use firebug to view the JSON response

• Setup error handling in your jquery code using the jQuery.ajaxSetup options such as:

    $.ajaxSetup({"error":function(XMLHttpRequest,textStatus, errorThrown) {   
        alert(textStatus);
        alert(errorThrown);
        alert(XMLHttpRequest.responseText);
    }});
  

Using the error handling for debugging is great, since you will know immediately when there is a problem with your response. You can check out the jQuery documentation for jQuery.ajax which has all of the available options for jQuery.ajaxSetup.

EDIT: A third option would be to just open the URL that should be generating the JSON and run the output through JSON Lint to validate it.