最早的路由定义方式
import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'
import About from '../views/About.vue'
import Login from '../views/Login.vue'
Vue.use(VueRouter)
const routes = [
{ path: '/', name: 'Home', component: Home },
{ path: '/about', name: 'About',
