【Vue 开发实战】生态篇 # 19：Vue Router的使用场景

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')
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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  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  中
        path: 'profile',
        component: RouterChildrenDemo,
        name: '3-1'
      },
      {
        // 当 /user/:id/posts 匹配成功
        // RouterChildrenDemo 会被渲染在 RouterDemo 的  中
        path: 'posts',
        component: RouterChildrenDemo
      }
    ]
  },
  { path: '/a', redirect: '/bar' },
  { path: '*', component: RouterDemo, name: '404' }
]

export default routes
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router-demo\src\components\RouterDemo.vue

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