bwj_wechat/custom-tab-bar/index.wxml

<van-tabbar active="{{ active }}" placeholder>
    <van-tabbar-item bindtap="onChange" data-index="{{index}}" wx:for="{{tabbarList}}" wx:key="index" icon="{{item.icon}}">{{item.text}}</van-tabbar-item>
</van-tabbar>

<van-dialog use-slot title="在线客服" show="{{ show }}" confirmButtonText='呼叫' show-cancel-button bind:close="onClose" bind:confirm="CallOut" confirm-button-color="#4BBECF">
    <view style="text-align: center; height: 150rpx; line-height: 150rpx;">请联系:{{phoneNumber}}</view>
</van-dialog>