商品详情页促销信息点击整行 就显示下拉菜单 code review by xuqi

@@ -38,7 +38,7 @@ if (0 === $('.goodsDiscount .discount-folder').children().length) {
 }
 
 //goods-discount下拉按钮点击事件
-$('.goodsDiscount .dropdown').on('touchend', function(e) {
+$('.goodsDiscount').on('touchend', function(e) {
     if ($discountFolder.is(':hidden')) {
         $discountArrow.removeClass('icon-down').addClass('icon-up').html('');
         $discountFolder.slideDown();