toktok-front/toktok-wx-applet/custom-tab-bar/index.wxml

<!--custom-tab-bar/index.js.wxml-->
<view class="tab-bar">
  <view wx:for="{{list}}" wx:key="index" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" bindtap="switchTab">
    <image src="{{selected == index ? item.selectedIconPath : item.iconPath}}"></image>
    <view style="color: {{selected == index ? selectedColor : color}}">{{item.text}}</view>
    <text wx:if="{{index==3 && unreadMsgNum>0}}"></text>
  </view>
</view>