vue缓存 keep-alive

1.app.vue中代码

<template>
  <div id="app">
    <keep-alive>
      <router-view v-if="$route.meta.keepAlive"></router-view>
    </keep-alive>
    <router-view v-if="!$route.meta.keepAlive"></router-view>
  </div>
</template>
<script>
  export default {
    name: 'App',
  }
</script>

2.router.js中代码

import Vue from 'vue'
import Router from 'vue-router'
Vue.use(Router)
const List = ()  => import('@/components/List/List')  // 分类列表
const Search = ()  => import('@/components/Index/Search')  // 搜索

const router = new Router({
  mode: 'history',
  routes: [
    { path: '/List',name: 'List', component: List, meta:{title:'分类列表',keepAlive: true}},//需要缓存的页面
    { path: '/Search',name: 'Search', component: Search, meta:{title:'搜索'}},//不需要缓存的页面
     //需要缓存的页面把keepAlive设为true，不需要的缓存的页面不用写就可以了
  ],

})

export default router