<template>
  <div id="app">
    <img alt="Vue logo" src="./assets/logo.png">
    <HelloWorld msg="Welcome to Your Vue.js App"/>
  </div>
</template>

<script>
import HelloWorld from './components/HelloWorld.vue'

export default {
  name: 'App',
  components: {
    HelloWorld
  }
}
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

import Vue from 'vue'
import VueRouter from 'vue-router'
import HomeView from '../views/HomeView.vue'

Vue.use(VueRouter)

// 维护路由表，某个路由路径对应哪个视图组件
const routes = [
  {
    path: '/',
    name: 'home',
    //静态引入，打包时组件打包到同一个js文件里面
    component: HomeView
  },
  {
    path: '/about',
    name: 'about',
    // route level code-splitting
    // this generates a separate chunk (about.[hash].js) for this route
    // which is lazy-loaded when the route is visited.
    // 懒加载，项目打包时，单独打包到一个js文件里面
    // 如果请求这个视图时才加载，否则不加载
    // 建议使用这个动态导入方式，性能更好一些
    component: () => import(/* webpackChunkName: "about" */ '../views/AboutView.vue')
  }
]

const router = new VueRouter({
  routes
})

export default router

<template>
  <div id="app">
    <nav>
      <router-link to="/">Home</router-link>
      <router-link to="/about">About</router-link>
    </nav>
    <router-view/>
  </div>
</template>

<el-container>
  <el-aside width="200px">Aside</el-aside>
  <el-container>
    <el-header>Header</el-header>
    <el-main>Main</el-main>
  </el-container>
</el-container>