Vue 开发实战生态篇 # 19：Vue Router的使用场景

Posted 2022-09-19 凯小默

说明

【Vue 开发实战】学习笔记。

传统开发模式

• www.xxx.com —— index.html
• www.xxx.com/about —— about.html
• www.xxx.com/xxx —— xxx.html

单页面(SPA)开发模式

• www.xxx.com —— index.html
• www.xxx.com/about —— index.html
• www.xxx.com/xxx —— index.html

解决的问题

• 监听 URL 的变化,并在变化前后执行相应的逻辑
• 不同的 URL 对应不同的不同的组件
• 提供多种方式改变 URL 的 API ( URL的改变不能导致浏览器刷新)

使用方式

• 提供一个路由配置表,不同 URL 对应不同组件的配置
• 初始化路由实例 new VueRouter()
• 挂载到 Vue 实例上
• 提供一个路由占位，用来挂载 URL 匹配到的组件

实战例子

完整的请看：https://github.com/kaimo313/vue-development-practice/tree/master/router-demo

router-demo\\src\\main.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import App from './App.vue'
import routes from './routes'

Vue.config.productionTip = false

Vue.use(VueRouter)

const router = new VueRouter(
  mode: 'history',
  routes,
)

new Vue(
  router,
  render: h => h(App),
).$mount('#app')

router-demo\\src\\routes.js

import RouterDemo from './components/RouterDemo'
import RouterChildrenDemo from './components/RouterChildrenDemo'

const routes = [
   path: '/foo', component: RouterDemo, name: '1' ,
   path: '/bar', component: RouterDemo, name: '2' ,
  // 当 /user/:id 匹配成功，
  // RouterDemo 会被渲染在 App 的 <router-view /> 中
   path: '/user/:id', 
    component: RouterDemo, 
    name: '3',
    props: true,
    children: [
      
        // 当 /user/:id/profile 匹配成功，
        // RouterChildrenDemo 会被渲染在 RouterDemo 的 <router-view/> 中
        path: 'profile',
        component: RouterChildrenDemo,
        name: '3-1'
      ,
      
        // 当 /user/:id/posts 匹配成功
        // RouterChildrenDemo 会被渲染在 RouterDemo 的 <router-view/> 中
        path: 'posts',
        component: RouterChildrenDemo
      
    ]
  ,
   path: '/a', redirect: '/bar' ,
   path: '*', component: RouterDemo, name: '404' 
]

export default routes

router-demo\\src\\components\\RouterDemo.vue

<template>
  <div>
    <router-link to="/foo">Go to Foo</router-link>
    <br/>
    <router-link to="/user/12">Go to /user/12</router-link>
    <br/>
    <router-link to="/user/12/profile">Go to /user/12/profile</router-link>
    <br/>
    <router-link to="/other">Go to 404</router-link>
    <br/>
    <router-link to="/a">Go to a 重定向到 bar</router-link>
    <br/>
    <a href="#/foo">Go to Foo</a>
    <br/>
    <button @click="$router.push('foo')">Go to Foo</button>
    <p>id: id</p>
    <p>routerInfo</p>
    <router-view></router-view>
  </div>
</template>
<script>
export default 
  props: ['id'],
  computed: 
    routerInfo() 
      const  fullPath, path, name, params, query, meta  = this.$route
      return 
        fullPath, path, name, params, query, meta
      
    
  

</script>

router-demo\\src\\components\\RouterChildrenDemo.vue

<template>
  <div>
    routerInfo
  </div>
</template>
<script>
export default 
  computed: 
    routerInfo() 
      const  fullPath, path, name, params, query, meta  = this.$route
      return 
fullPath, path, name, params, query, meta
      
    
  

</script>

效果如下：