on () {
                // 禁用按钮防止重复提交
                $("#update_dispatch_task").attr({disabled: "disabled"});
            },
            //成功返回
            success: function (data) {
                $("#update_dispatch_task").removeAttr('disabled');
                var index = parent.layer.getFrameIndex(window.name); //先得到当前iframe层的索引
               // parent.layer.close(index); //再执行关闭
                closeTab()
            },
            //处理完