qianqianJingzhun/custom-tab-bar/index.wxml

<van-tabbar active="{{ active }}" bind:change="onChange" wx:if="{{type}}">
    <van-tabbar-item icon="wap-home-o">首页</van-tabbar-item>
    <van-tabbar-item icon="contact">我的</van-tabbar-item>
</van-tabbar>
<van-tabbar active="{{ active }}" bind:change="onChangeTeacher" wx:else>
    <van-tabbar-item icon="wap-home-o">作业批改</van-tabbar-item>
    <van-tabbar-item icon="orders-o">作业发布</van-tabbar-item>
    <van-tabbar-item icon="contact">个人中心</van-tabbar-item>
</van-tabbar>