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

​​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：

【Vue 开发实战】生态篇 # 19：Vue Router的使用场景_初始化