Getting feedburner subscriber count with jQuery and JSON

I need to display the total number of the feedburner subscribers without PHP. The script should be work in a standard HTML / jQuery page.

Something like this:

        $(document).ready(function(){

            var username = "feeder_username";   
            var feedburnerurl = "http://query.yahooapis.com/v1/public/yql?q=SELECT%20*%20FROM%20xml%20WHERE%20url%3D'https%3A%2F%2Ffeedburner.google.com%2Fapi%2Fawareness%2F1.0%2FGetFeedData%3Furi%3D"+ username +"%26format%3Djson%26callback%3D'&format=json&callback=?";   

            $.getJSON(feedburnerurl, function(data) {                                             
                feed_count = data(['query']['results']['rsp']['feed']['entry'].circulation);  
                $('#feed').html(feed_count);
            }); 

        });             

Do you have a working solution?

The feedburner API is no longer available. According to this: https://developers.google.com/feedburner/

So you can't do this anymore..