<wxs src="./helper.wxs" module="helper" />

  <image class="product_image" src="{{product.cover_img}}"></image>
  <view class="product_name" >{{product.name}}</view>
  <view class="product_price" >{{product.price}}</view>
  <view class="product_time">{{helper.formatTime(product.start_time, product.end_time)}}</view>