npm install vue-router@4

import { createRouter,createWebHashHistory} from ‘vue-router‘ 

import About from ‘../components/About.vue‘

const routes = [
    { path: ‘/about‘, component: About },
    //{ path: ‘/home‘, component: Home },
]

const router = createRouter({
    history: createWebHashHistory(),
    routes
}) 

export default router

import { createApp } from ‘vue‘
import App from ‘./App.vue‘
import router from ‘./router/index.js‘


createApp(App).use(router).mount(‘#app‘)

<template>
    <!-- 创建超链接 可以在不重新加载页面的情况下更改URL-->
    <router-link to="/about">Go to About</router-link>
  <!-- 路由出口 -->
  <!-- 路由匹配到的组件将渲染在这里 -->
  <router-view></router-view>
</template>