                url: server_context+"/product_tag_list",
                async:false,
                dataType: 'json',
                data: "",
                //成功返回
                success: function (data) {
                    if(data.code != "200"){
                        layer.msg(data.msg);
                        return ;
                    }
                    var str = '';
                    for (var i = 0; i < data.result.length; i++) {
                        str += '<option value=\