IE浏览器未加载ajax请求

I have a script the loads data via ajax, splits it, reverses it and displays it on the page. As usual all it's working great on all browsers except the dreaded IE. It throws up no errors in IE, just does not load. I am using Twitter Bootstrap, jQuery v1.7.1. Please help if you can. Cheers

$.ajax({
      url: "insert_URL_here",
      success: function(data){

        var number_box = $('.number_box');
        var number_list = data.split("");

        number_list.reverse();

        for(var i=0; i < number_box.length; i++)
        {

          if(number_list.length > i)
          {
              $(".unit_"+i).html(number_list[i]);
          }
          else
          {
              $(".unit_"+i).html("0");
          }
        }
      }
    });

Try setting the dataType property to json ..

If you are expecting your request data to be in json format..

dataType : 'json'  and also the data 

$.ajax({
      url: 'insert_URL_here',
      data : '{}',
      dataType : 'text',  // OR  dataType : 'html',
      success :