Merge branch 'develop' of http://git.dev.yoho.cn/web/yohobuy into develop

-var $ = require('jquery');
+var $ = require('jquery'),
+            tip = require('../../plugin/tip');
 var commentsNum;
 
 
@@ -25,11 +26,11 @@ var commentsNum;
 
 })();
 
-$('#nav-tab li').on('click', function() {
+$('#nav-tab li').on('touchend', function() {
     var index = $(this).index();
 
     if ($(this).hasClass('comment-nav') && 0 === commentsNum) {
-        alert('暂无商品评价');
+        tip.show('暂无商品评价');
     } else {
         if (!$(this).hasClass('focus')) {