weixin/miniprogram_npm/lin-ui/spin/index.wxml

<view wx:if="{{show}}" class="{{type==='flash'?'l-class':''}} {{type + '-spinner'}} {{type==='change'||custom?'':'spinner-' + type + '-' + size}}">
  <block wx:if="{{custom}}">
    <slot/>
  </block>
  <block wx:else>
    <view style="{{color?'background-color:'+color:''}}" class="l-class {{type+'-bounce1'}} {{'spinner-'+ type + '-' + size}}"></view>
    <view wx:if="{{type==='flash' || type==='change'}}" style="{{color?'background-color:'+color:''}}" class="l-class {{type+'-bounce2'}} {{'spinner-'+ type + '-' + size}}"></view>
    <view wx:if="{{type==='change'}}" style="{{color?'background-color:'+color:''}}" class="l-class {{type+'-bounce3'}} {{'spinner-'+ type + '-' + size}}"></view>
  </block>
</view>