<!-- <view>
  <slot></slot>
</view> -->
<block style="text-align: center; {{style}}">
  <view wx:if="{{showToggle}}" class="expand-class" bindtap='listToggle'>
    点击收起部分
    <van-icon name="arrow-up" />
  </view>
  <view wx:else class="expand-class" bindtap='listToggle'>
    展开查看更多
    <van-icon name="arrow-down" />
  </view>
</block>