修改clickt为touchend事件

@@ -38,7 +38,7 @@ if (0 === $('.goodsDiscount .discount-folder').children().length) {
 }
 
 //goods-discount下拉按钮点击事件
-$('.goodsDiscount .dropdown').on('touchend', function() {
+$('.goodsDiscount .dropdown').on('touchend', function(e) {
     if ($discountFolder.is(':hidden')) {
         $discountArrow.removeClass('icon-down').addClass('icon-up').html('');
         $discountFolder.slideDown();
@@ -46,5 +46,7 @@ $('.goodsDiscount .dropdown').on('touchend', function() {
         $discountArrow.removeClass('icon-up').addClass('icon-down').html('');
         $discountFolder.slideUp();
     }
+
+    return false;
 });
 require('./like');