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

<view class="l-badge" mut-bind:tap="handleTap">
  <slot/>
  <block wx:if="{{show}}">
    <view wx:if="{{dot}}" class="l-badge-dot l-class l-class-self l-self-class"></view>
    <view wx:else class="{{'l-badge-content-'+shape}} l-badge-content l-class l-class-self l-self-class">{{finalCount}}</view>
  </block>
</view>