trafficBroadcast/miniprogram/pages/articleList/index.wxml

<!--pages/articleList/index.wxml-->
<view class="articleListlist" wx:for="{{list}}" wx:key="_id" data-id="{{item._id}}" bind:tap="toDetail">
  <image class="image" wx:if="{{item.cover}}" src="{{item.cover}}" />
  <view class="title">{{item.title}}</view>
</view>