路由:
文件: router => index.js
// 1\. 导入模块import Vue from 'vue';import VueRouter from 'vue-router';// 2\. 利用VueRouter插件Vue.use(VueRouter)// 3\. 导入组件import Home from '../components/Home';import List from '../components/List';import About from '../components/About';// 4\. 配置路由与组件映射关系let routes = [ { path:'/home', component: Home }, { path:'/list', component: List }, { path:'/about', component: About }]// 5.实例化路由const router = new VueRouter({ routes})export default router4.2.3 利用路由