增加限流提示

@@ -23,7 +23,7 @@ let functions = {
                     if (addRestult.code === 401) {
                         window.location.href = '//m.yohobuy.com/signin.html?refer=' + window.location.href;
                     }
-                    tip.show(addRestult.message);
+                    tip.show(addRestult.message || '人太多啦,稍后再试!');
                 } else {
                     $('#productSku').val(productSku);
                     $('#buyNumber').val(buyNumber);