解决vue项目中某一页面不想引用公共组件app.vue的问题

<template>
  <div id="app">
    <home-header v-show="!(path ==='/') "></home-header>
    <home-aside v-show="!(path ==='/')"></home-aside>
    <router-view/>
  </div>
</template>
 
<script>
  import HomeHeader from './components/header/Header'
  import HomeAside from './components/aside/Aside'
  export default {
    name: 'App',
    data(){
      return{
        path:''
      }
    },
    components: {
      HomeHeader,
      HomeAside,
    },
    // 判断路由
    mounted() {
     this.path = this.$route.path;
     // console.log(this.$route.path)
    },
    watch:{
      $route(to,from){
        this.path = to.path
      }
    }
  }
</script>
<style>
</style>

<template>
 <div id="back" v-if="isShowBack">
  <div class="back_box" @click="toBack()">
   <span class="left_arrow">
    <img src="../../../static/images/icon_arrow_bottom_left.png" />
   </span>
  </div>
 </div>
</template>
 
<script>
 var that;
 export default {
  data() {
   return {
    msg: '',
    isShowBack:false
   }
  },
  methods: {
   toBack() {
    console.log('点击了返回')
    this.$router.go(-1);
   }
  },
  watch:{
   '$route':function(){
    that = this;
    console.log('watch里面',that.$route.name);
    if(that.$route.name == 'HomeNew'){
     that.isShowBack = false;
    }else{
     that.isShowBack = true;
    }
   }
  }
 }
</script>
 
<style scoped="scoped">
 .back_box {
  width: 100%;
  height: 30px;
  background: #f1f1f1;
 }
 
 .left_arrow {
  width: 22px;
  display: inline-block;
  transform: rotate(90deg);
  margin-top: 4px;
  margin-left: 4px;
 }
 
 .left_arrow img {
  width: 100%;
 }
</style>