jquery.ajax在火狐浏览器中的语法与IE、360有什么区别吗？

很郁闷的在360和IE是OK的，可是到了火狐压根就没反应。

$.ajax({
                    type: "GET",
                    url: "ajax/SharingList.ashx",
                    cache: false,
                    success: function(html) {
                        if (html.toString().length > 0) {
                            $("#rankTabBB").html(html.toString());
                        }
                        else {
                            $("#rankTabBB").html("Oops...No data...");
                        }
                    }
                });