vue四十九：Vue美团项目之商家详情-tabbar状态切换和导航返回

左上角返回按钮

下方菜单栏只在首页展示

<template>
    <div id="app">
<!--        <Home></Home>-->
        <router-view></router-view><!--路由出口-->
        <van-tabbar v-model="active" v-if="showTabbar">
            <van-tabbar-item icon="home-o" to="/">首页</van-tabbar-item>
            <van-tabbar-item icon="orders-o" to="/order">订单</van-tabbar-item>
            <van-tabbar-item icon="user-o" to="/mine">我的</van-tabbar-item>
        </van-tabbar>
    </div>
</template>
<script>
    // import Home from "./components/Home"
    import {Tabbar, TabbarItem} from 'vant';

    export default {
        name: "App",
        data() {
            return {
                active: 0
            }
        },
        components: {
            // Home,
            [Tabbar.name]: Tabbar,
            [TabbarItem.name]: TabbarItem
        },
        computed:{
            showTabbar(){
                const name = this.$route.name;
                if(name == 'home' || name == 'order' || name == 'mine'){
                    return true;
                }else{
                    return false;
                }
            }
        }
    };
</script>

<style>
    @import "styles/init.css";

    .van-search {
        padding: 0;
    }
</style>