<view class="i-class i-load-more {{loading?'':'i-load-more-line'}}">
  <view class="i-load-more-loading" wx:if="{{loading}}"></view>
  <view class="i-load-more-tip">
    <view wx:if="{{tip!==''}}">{{tip}}</view>
    <view wx:elif="{{tip===''&&loading}}">正在加载</view>
    <view class="i-load-more-empty" wx:else></view>
  </view>
</view>