reader/custom-tab-bar/index.wxml

<view class="tab-bar">
    <view wx:for="{{listTab}}" 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>
    </view>
</view>