school_meal_wxapp/components/l-noticebar/index.wxml

<view wx:if="{{datalist.length!=0}}" class="noticebar">
  <van-notice-bar scrollable="true" left-icon="volume-o">
    <view class="flex">
      <view wx:for="{{datalist}}" wx:key="index" bindtap="success" data-index="{{index}}" class="item">
        {{index+1}}、{{item.name}}
      </view>
    </view>
  </van-notice-bar>
</view>