好了，根据关使用的$不用彷徨函数返回的XmlHtt prequest对象的建议我想出了这一点：

Ok, so based off of the suggestion to use the XmlHttpRequest object returned by the $.get function I came up with this:

function doStuff(){
    var ajaxRequest = $.ajax({
                        url : 'url/url/url',
                        type : "GET",
                        success : function(data){
                          ajaxRequest = null;
                          doSuccessStuff(data);
                        }
                      });

    $('#dialog').dialog({
      title: 'Stuff Dialog',
      bgiframe: true,
      modal: true,
      buttons: {
        Cancel: function() {
          if (ajaxRequest)
            ajaxRequest.abort();
          doCancelStuff();
        }
      }
    });
  }

看来工作和清洁的感觉给我。

It seems to work and feels cleaner to me.