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组件内守卫：
//进入守卫：通过路由规则，进入该组件时被调用 beforeRouteEnter (to, from, next) { }, //离开守卫：通过路由规则，离开该组件时被调用 beforeRouteLeave (to, from, next) { }
About.vue App.vue
components
Banner.vue
<template>
<div class="col-xs-offset-2 col-xs-8">
<div class="page-header">
<h2>Vue Router Demo</h2>
<button @click="back">后退</button>
<button @click="forward">前进</button>
<button @click="test">测试一下go</button>
</div>
</div>
</template>
<script>
export default {
name:'Banner',
methods: {
back(){
this.$router.back()
// console.log(this.$router)
},
forward(){
this.$router.forward()
},
test(){
this.$router.go(3)
}
},
}
</script>
pages
About.vue
<template>
<h2>我是About的内容</h2>
</template>
<script>
export default {
name:'About',
/* beforeDestroy() {
console.log('About组件即将被销毁了')
},*/
/* mounted() {
console.log('About组件挂载完毕了',this)
window.aboutRoute = this.$route
window.aboutRouter = this.$router
}, */
mounted() {
// console.log('%%%',this.$route)
},
//通过路由规则，进入该组件时被调用
beforeRouteEnter (to, from, next) {
console.log('About--beforeRouteEnter',to,from)
if(to.meta.isAuth){ //判断是否需要鉴权
if(localStorage.getItem('school')==='atguigu'){
next()
}else{
alert('学校名不对，无权限查看！')
}
}else{
next()
}
},
//通过路由规则，离开该组件时被调用
beforeRouteLeave (to, from, next) {
console.log('About--beforeRouteLeave',to,from)
next()
}
}
</script>
Detail.vue
<template>
<ul>
<li>消息编号：{{id}}</li>
<li>消息标题：{{title}}</li>
</ul>
</template>
<script>
export default {
name:'Detail',
props:['id','title'],
computed: {
// id(){
// return this.$route.query.id
// },
// title(){
// return this.$route.query.title
// },
},
mounted() {
// console.log(this.$route)
},
}
</script>
Home.vue
<template>
<div>
<h2>Home组件内容</h2>
<div>
<ul class="nav nav-tabs">
<li>
<router-link class="list-group-item" active-class="active" to="/home/news">News</router-link>
</li>
<li>
<router-link class="list-group-item" active-class="active" to="/home/message">Message</router-link>
</li>
</ul>
<keep-alive include="News">
<router-view></router-view>
</keep-alive>
</div>
</div>
</template>
<script>
export default {
name:'Home',
/* beforeDestroy() {
console.log('Home组件即将被销毁了')
}, */
/* mounted() {
console.log('Home组件挂载完毕了',this)
window.homeRoute = this.$route
window.homeRouter = this.$router
}, */
}
</script>
Message.vue
<template>
<div>
<ul>
<li v-for="m in messageList" :key="m.id">
<!-- 跳转路由并携带params参数，to的字符串写法 -->
<!-- <router-link :to="`/home/message/detail/${m.id}/${m.title}`">{{m.title}}</router-link> -->
<!-- 跳转路由并携带params参数，to的对象写法 -->
<router-link :to="{
name:'xiangqing',
query:{
id:m.id,
title:m.title
}
}">
{{m.title}}
</router-link>
<button @click="pushShow(m)">push查看</button>
<button @click="replaceShow(m)">replace查看</button>
</li>
</ul>
<hr>
<router-view></router-view>
</div>
</template>
<script>
export default {
name:'Message',
data() {
return {
messageList:[
{id:'001',title:'消息001'},
{id:'002',title:'消息002'},
{id:'003',title:'消息003'}
]
}
},
methods: {
pushShow(m){
this.$router.push({
name:'xiangqing',
query:{
id:m.id,
title:m.title
}
})
},
replaceShow(m){
this.$router.replace({
name:'xiangqing',
query:{
id:m.id,
title:m.title
}
})
}
},
beforeDestroy() {
// console.log('Message组件即将被销毁了')
},
}
</script>
News.vue
<template>
<ul>
<li :style="{opacity}">欢迎学习Vue</li>
<li>news001 <input type="text"></li>
<li>news002 <input type="text"></li>
<li>news003 <input type="text"></li>
</ul>
</template>
<script>
export default {
name:'News',
data() {
return {
opacity:1
}
},
/* beforeDestroy() {
console.log('News组件即将被销毁了')
clearInterval(this.timer)
}, */
/* mounted(){
this.timer = setInterval(() => {
console.log('@')
this.opacity -= 0.01
if(this.opacity <= 0) this.opacity = 1
},16)
}, */
activated() {
console.log('News组件被激活了')
this.timer = setInterval(() => {
console.log('@')
this.opacity -= 0.01
if(this.opacity <= 0) this.opacity = 1
},16)
},
deactivated() {
console.log('News组件失活了')
clearInterval(this.timer)
},
}
</script>
router
index.js
// 该文件专门用于创建整个应用的路由器
import VueRouter from 'vue-router'
//引入组件
import About from '../pages/About'
import Home from '../pages/Home'
import News from '../pages/News'
import Message from '../pages/Message'
import Detail from '../pages/Detail'
//创建并暴露一个路由器
const router = new VueRouter({
routes:[
{
name:'guanyu',
path:'/about',
component:About,
meta:{isAuth:true,title:'关于'}
},
{
name:'zhuye',
path:'/home',
component:Home,
meta:{title:'主页'},
children:[
{
name:'xinwen',
path:'news',
component:News,
meta:{isAuth:true,title:'新闻'},
/* beforeEnter: (to, from, next) => {
console.log('前置路由守卫',to,from)
if(to.meta.isAuth){ //判断是否需要鉴权
if(localStorage.getItem('school')==='atguigu'){
next()
}else{
alert('学校名不对，无权限查看！')
}
}else{
next()
}
} */
},
{
name:'xiaoxi',
path:'message',
component:Message,
meta:{isAuth:true,title:'消息'},
children:[
{
name:'xiangqing',
path:'detail',
component:Detail,
meta:{isAuth:true,title:'详情'},
//props的第一种写法，值为对象，该对象中的所有key-value都会以props的形式传给Detail组件。
// props:{a:1,b:'hello'}
//props的第二种写法，值为布尔值，若布尔值为真，就会把该路由组件收到的所有params参数，以props的形式传给Detail组件。
// props:true
//props的第三种写法，值为函数
props($route){
return {
id:$route.query.id,
title:$route.query.title,
a:1,
b:'hello'
}
}
}
]
}
]
}
]
})
//全局前置路由守卫————初始化的时候被调用、每次路由切换之前被调用
/* router.beforeEach((to,from,next)=>{
console.log('前置路由守卫',to,from)
if(to.meta.isAuth){ //判断是否需要鉴权
if(localStorage.getItem('school')==='atguigu'){
next()
}else{
alert('学校名不对，无权限查看！')
}
}else{
next()
}
}) */
//全局后置路由守卫————初始化的时候被调用、每次路由切换之后被调用
router.afterEach((to,from)=>{
console.log('后置路由守卫',to,from)
document.title = to.meta.title || '硅谷系统'
})
export default router
App.vue
<template>
<div>
<div class="row">
<Banner/>
</div>
<div class="row">
<div class="col-xs-2 col-xs-offset-2">
<div class="list-group">
<!-- 原始html中我们使用a标签实现页面的跳转 -->
<!-- <a class="list-group-item active" href="./about.html">About</a> -->
<!-- <a class="list-group-item" href="./home.html">Home</a> -->
<!-- Vue中借助router-link标签实现路由的切换 -->
<router-link class="list-group-item" active-class="active" to="/about">About</router-link>
<router-link class="list-group-item" active-class="active" to="/home">Home</router-link>
</div>
</div>
<div class="col-xs-6">
<div class="panel">
<div class="panel-body">
<!-- 指定组件的呈现位置 -->
<router-view></router-view>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
import Banner from './components/Banner'
export default {
name:'App',
components:{Banner}
}
</script>
main.js
//引入Vue
import Vue from 'vue'
//引入App
import App from './App.vue'
//引入VueRouter
import VueRouter from 'vue-router'
//引入路由器
import router from './router'
//关闭Vue的生产提示
Vue.config.productionTip = false
//应用插件
Vue.use(VueRouter)
//创建vm
new Vue({
el:'#app',
render: h => h(App),
router:router
})
