当前位置：首页 > news >正文

第 6 章：vue-router

news 2025/12/26 21:32:50

1. router 相关理解

1.1 vue-router 的理解

vue 的一个插件库，专门用来实现 SPA 应用

1.2 对 SPA 应用的理解

单页 Web 应用（single page web application，SPA）。
整个应用只有一个完整的页面。
点击页面中的导航链接不会刷新页面，只会做页面的局部更新。
数据需要通过 ajax 请求获取。

1.3 路由的理解

什么是路由?
- 一个路由就是一组映射关系（key - value）
- key 为路径, value 可能是 function 或 component
路由分类

后端路由：
- 理解：value 是 function, 用于处理客户端提交的请求。
- 工作过程：服务器接收到一个请求时, 根据请求路径找到匹配的函数来处理请求, 返回响应数据。
前端路由：
- 理解：value 是 component，用于展示页面内容。
- 工作过程：当浏览器的路径改变时, 对应的组件就会显示。

2. 路由的基本使用

安装vue-router，命令：npm i vue-router
应用插件：Vue.use(VueRouter)
编写router配置项:

//引入VueRouter
import VueRouter from 'vue-router'
//引入Luyou 组件
import About from '../components/About'
import Home from '../components/Home'//创建router实例对象，去管理一组一组的路由规则
const router = new VueRouter({routes:[{path:'/about',component:About},{path:'/home',component:Home}]
})//暴露router
export default router

实现切换（active-class可配置高亮样式）：
<router-link active-class="active" to="/about">About</router-link>
指定展示位置：
<router-view></router-view>

3. 几个注意点

路由组件通常存放在pages文件夹，一般组件通常存放在components文件夹。
通过切换，“隐藏”了的路由组件，默认是被销毁掉的，需要的时候再去挂载。
每个组件都有自己的$route属性，里面存储着自己的路由信息。
整个应用只有一个router，可以通过组件的$router属性获取到。

4. 多级路由

配置路由规则，使用children配置项：

routes:[{path:'/about',component:About,},{path:'/home',component:Home,children:[ //通过children配置子级路由{path:'news', //此处一定不要写：/newscomponent:News},{path:'message',//此处一定不要写：/messagecomponent:Message}]}
]

跳转（要写完整路径）：
<router-link to="/home/news">News</router-link>

5. 路由的 query 参数

传递参数

<!-- 跳转并携带query参数，to的字符串写法 -->
<router-link :to="/home/message/detail?id=666&title=你好">跳转</router-link><!-- 跳转并携带query参数，to的对象写法 -->
<router-link :to="{path:'/home/message/detail',query:{id:666,title:'你好'}}"
>跳转</router-link>

接收参数

$route.query.id
$route.query.title

6. 命名路由

作用：可以简化路由的跳转。

6.1 如何使用命名路由

给路由命名：

{path:'/demo',component:Demo,children:[{path:'test',component:Test,children:[{name:'hello' //给路由命名path:'welcome',component:Hello,}]}]
}

简化跳转

<!--简化前，需要写完整的路径 -->
<router-link to="/demo/test/welcome">跳转</router-link><!--简化后，直接通过名字跳转 -->
<router-link :to="{name:'hello'}">跳转</router-link><!--简化写法配合传递参数 -->
<router-link :to="{name:'hello',query:{id:666,title:'你好'}}"
>跳转</router-link>

7. 路由的 params 参数

配置路由，声明接收 params 参数

{path:'/home',component:Home,children:[{path:'news',component:News},{component:Message,children:[{name:'xiangqing',path:'detail/:id/:title', //使用占位符声明接收params参数component:Detail}]}]
}

传递参数

<!-- 跳转并携带params参数，to的字符串写法 -->
<router-link :to="/home/message/detail/666/你好">跳转</router-link><!-- 跳转并携带params参数，to的对象写法 -->
<router-link :to="{name:'xiangqing',params:{id:666,title:'你好'}}"
>跳转</router-link>

特别注意：路由携带params参数时，若使用to的对象写法，则不能使用path配置项，必须使用name配置！

接收参数

$route.params.id
$route.params.title

8. 路由的 props 配置

作用：让路由组件更方便的收到参数

{name:'xiangqing',path:'detail/:id',component:Detail,//第一种写法：props值为对象，该对象中所有的key-value的组合最终都会通过props传给Detail组件// props:{a:900}//第二种写法：props值为布尔值，布尔值为true，则把路由收到的所有params参数通过props传给Detail组件// props:true//第三种写法：props值为函数，该函数返回的对象中每一组key-value都会通过props传给Detail组件props(route){return {id:route.query.id,title:route.query.title}}
}

9. `<router-link>`的 replace 属性

作用：控制路由跳转时操作浏览器历史记录的模式
浏览器的历史记录有两种写入方式：分别为push和replace，push是追加历史记录，replace是替换当前记录。路由跳转时候默认为push
如何开启replace模式：<router-link replace .......>News</router-link>
push 类似与数据结构里面的栈结构，先进后出，replace 是直接替换

10. 编程式路由导航

作用：不借助<router-link> 实现路由跳转，让路由跳转更加灵活
具体编码：

//$router的两个API
this.$router.push({name:'xiangqing',params:{id:xxx,title:xxx}
})this.$router.replace({name:'xiangqing',params:{id:xxx,title:xxx}
})
this.$router.forward() //前进
this.$router.back() //后退
this.$router.go() //可前进也可后退

11. 缓存路由组件

作用：让不展示的路由组件保持挂载，不被销毁。
具体编码：

<keep-alive include="News"> <router-view></router-view>
</keep-alive>

12. 两个新的生命周期钩子

作用：路由组件所独有的两个钩子，用于捕获路由组件的激活状态。
具体名字：
1. activated路由组件被激活时触发。
2. deactivated路由组件失活时触发。

nextTick 是第11个钩子

13. 路由守卫

作用：对路由进行权限控制
分类：全局守卫、独享守卫、组件内守卫

13.1 全局守卫

//全局前置守卫：初始化时执行、每次路由切换前执行
router.beforeEach((to,from,next)=>{console.log('beforeEach',to,from)if(to.meta.isAuth){ //判断当前路由是否需要进行权限控制if(localStorage.getItem('school') === 'atguigu'){ //权限控制的具体规则next() //放行}else{alert('暂无权限查看')// next({name:'guanyu'})}}else{next() //放行}
})//全局后置守卫：初始化时执行、每次路由切换后执行
router.afterEach((to,from)=>{console.log('afterEach',to,from)if(to.meta.title){ document.title = to.meta.title //修改网页的title}else{document.title = 'vue_test'}
})

13.2 独享守卫

beforeEnter(to,from,next){console.log('beforeEnter',to,from)if(to.meta.isAuth){ //判断当前路由是否需要进行权限控制if(localStorage.getItem('school') === 'atguigu'){next()}else{alert('暂无权限查看')// next({name:'guanyu'})}}else{next()}
}

12.3 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) {
}

13. 路由器的两种工作模式

对于一个url来说，什么是hash值？—— #及其后面的内容就是hash值。
hash值不会包含在 HTTP 请求中，即：hash值不会带给服务器。

13.1 hash模式：

地址中永远带着#号，不美观。
若以后将地址通过第三方手机app分享，若app校验严格，则地址会被标记为不合法。
兼容性较好。

13.2 history模式：

地址干净，美观。
兼容性和hash模式相比略差。
应用部署上线时需要后端人员支持，解决刷新页面服务端404的问题。

14. 路由的使用案例

效果

14.1 路由的基本使用案例

结构：

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
})

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 '../components/About'
import Home from '../components/Home'//创建并暴露一个路由器
export default new VueRouter({routes:[{path:'/about',component:About},{path:'/home',component:Home}]
})

App.vue

<template><div><div class="row"><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div></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>export default {name:'App',}
</script>

About.vue

<template><h2>我是About的内容</h2>
</template><script>export default {name:'About'}
</script>

Home.vue

<template><h2>我是Home的内容</h2>
</template><script>export default {name:'Home'}
</script>

14.2 多级路由案例

效果：
结构：

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
})

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'//创建并暴露一个路由器
export default new VueRouter({routes:[{path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$router},  */}
</script>

Message.vue

<template><div><ul><li><a href="/message1">message001</a>&nbsp;&nbsp;</li><li><a href="/message2">message002</a>&nbsp;&nbsp;</li><li><a href="/message/3">message003</a>&nbsp;&nbsp;</li></ul></div>
</template><script>export default {name:'Message'}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</script>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.3 路由的 query 参数案例

结构：

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
})

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
export default new VueRouter({routes:[{path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{path:'detail',component:Detail,}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$router},  */}
</script>

Message.vue

<template><div><ul><li v-for="m in messageList" :key="m.id"><!-- 跳转路由并携带query参数，to的字符串写法 --><!-- <router-link :to="`/home/message/detail?id=${m.id}&title=${m.title}`">{{m.title}}</router-link>&nbsp;&nbsp; --><!-- 跳转路由并携带query参数，to的对象写法 --><router-link :to="{path:'/home/message/detail',query:{id:m.id,title:m.title}}">{{m.title}}</router-link></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'}]}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</script>

Detail.vue

<template><ul><li>消息编号：{{$route.query.id}}</li><li>消息标题：{{$route.query.title}}</li></ul>
</template><script>export default {name:'Detail',mounted() {console.log(this.$route)},}
</script>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.4 使用命名路由案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$router},  */}
</script>

Message.vue

<template><div><ul><li v-for="m in messageList" :key="m.id"><!-- 跳转路由并携带query参数，to的字符串写法 --><!-- <router-link :to="`/home/message/detail?id=${m.id}&title=${m.title}`">{{m.title}}</router-link>&nbsp;&nbsp; --><!-- 跳转路由并携带query参数，to的对象写法 --><router-link :to="{name:'xiangqing',query:{id:m.id,title:m.title}}">{{m.title}}</router-link></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'}]}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</script>

Detail.vue

<template><ul><li>消息编号：{{$route.query.id}}</li><li>消息标题：{{$route.query.title}}</li></ul>
</template><script>export default {name:'Detail',mounted() {console.log(this.$route)},}
</script>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.5 路由的 params 参数案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail/:id/:title',component:Detail,}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 跳转路由并携带params参数，to的对象写法 --><router-link :to="{name:'xiangqing',params:{id:m.id,title:m.title}}">{{m.title}}</router-link></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'}]}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</script>

Detail.vue

<template><ul><li>消息编号：{{$route.params.id}}</li><li>消息标题：{{$route.params.title}}</li></ul>
</template><script>export default {name:'Detail',mounted() {// console.log(this.$route)},}
</script>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.6 路由的 props 配置案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,//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'}}}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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></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'}]}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</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>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.7 `<router-link>`的 replace 属性的案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,//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'}}}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</script>

Home.vue

<template><div><h2>Home组件内容</h2><div><ul class="nav nav-tabs"><li><router-link replace class="list-group-item" active-class="active" to="/home/news">News</router-link></li><li><router-link replace class="list-group-item" active-class="active" to="/home/message">Message</router-link></li></ul><router-view></router-view></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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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></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'}]}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</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>

Banner.vue

<template><div class="col-xs-offset-2 col-xs-8"><div class="page-header"><h2>Vue Router Demo</h2></div></div>
</template><script>export default {name:'Banner'}
</script>

14.8 编程式路由导航案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,//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'}}}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><router-view></router-view></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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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}})}},}
</script>

News.vue

<template><ul><li>news001</li><li>news002</li><li>news003</li></ul>
</template><script>export default {name:'News'}
</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>

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>

14.9 缓存路由组件案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,//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'}}}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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><!-- 缓存多个路由组件 --><!-- <keep-alive :include="['News','Message']"> --><!-- 缓存一个路由组件 --><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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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>news001 <input type="text"></li><li>news002 <input type="text"></li><li>news003 <input type="text"></li></ul>
</template><script>export default {name:'News',beforeDestroy() {console.log('News组件即将被销毁了')},}
</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>

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>

14.10 两个新的生命周期钩子案例

结构：

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
})

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
export default new VueRouter({routes:[{name:'guanyu',path:'/about',component:About},{path:'/home',component:Home,children:[{path:'news',component:News,},{path:'message',component:Message,children:[{name:'xiangqing',path:'detail',component:Detail,//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'}}}]}]}]
})

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>

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.$routewindow.aboutRouter = this.$router},  */}
</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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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 -= 0.01if(this.opacity <= 0) this.opacity = 1},16)}, */activated() {console.log('News组件被激活了')this.timer = setInterval(() => {console.log('@')this.opacity -= 0.01if(this.opacity <= 0) this.opacity = 1},16)},deactivated() {console.log('News组件失活了')clearInterval(this.timer)},}
</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>

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>

14.11 全局守卫案例

结构：

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
})

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:{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'}},{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>

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.$routewindow.aboutRouter = this.$router},  */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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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 -= 0.01if(this.opacity <= 0) this.opacity = 1},16)}, */activated() {console.log('News组件被激活了')this.timer = setInterval(() => {console.log('@')this.opacity -= 0.01if(this.opacity <= 0) this.opacity = 1},16)},deactivated() {console.log('News组件失活了')clearInterval(this.timer)},}
</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>

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>

14.12 独享守卫案例

结构：

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
})

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:{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('独享路由守卫',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>

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.$routewindow.aboutRouter = this.$router},  */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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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 -= 0.01if(this.opacity <= 0) this.opacity = 1},16)}, */activated() {console.log('News组件被激活了')this.timer = setInterval(() => {console.log('@')this.opacity -= 0.01if(this.opacity <= 0) this.opacity = 1},16)},deactivated() {console.log('News组件失活了')clearInterval(this.timer)},}
</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>

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>

14.13 组件内守卫案例

结构：

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
})

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>

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.$routewindow.aboutRouter = this.$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>

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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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 -= 0.01if(this.opacity <= 0) this.opacity = 1},16)}, */activated() {console.log('News组件被激活了')this.timer = setInterval(() => {console.log('@')this.opacity -= 0.01if(this.opacity <= 0) this.opacity = 1},16)},deactivated() {console.log('News组件失活了')clearInterval(this.timer)},}
</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>

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>

14.13 路由器的两种工作模式案例

结构：

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
})

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({mode:'history',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>

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.$routewindow.aboutRouter = this.$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>

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.$routewindow.homeRouter = this.$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>&nbsp;&nbsp; --><!-- 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 -= 0.01if(this.opacity <= 0) this.opacity = 1},16)}, */activated() {console.log('News组件被激活了')this.timer = setInterval(() => {console.log('@')this.opacity -= 0.01if(this.opacity <= 0) this.opacity = 1},16)},deactivated() {console.log('News组件失活了')clearInterval(this.timer)},}
</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>

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>

第 6 章：vue-router

1. router 相关理解 1.1 vue-router 的理解 vue 的一个插件库，专门用来实现 SPA 应用 1.2 对 SPA 应用的理解单页 Web 应用（single page web application，SPA）。整个应用只有一个完整的页面。点击页面中的导航链接不会刷新页…...

编程日记 2024/10/18 14:01:16

PaddleOCR模型转换、部署全流程（Ubuntu系统）_随记2

本篇衔接文章1、环境流程需要看随记1就可以 PaddleOCR环境搭建、模型训练、推理、部署全流程（Ubuntu系统）_随记1 一、ONNX导出 1、环境准备主要参考官方技术文档：官方技术文档未完做完更新... 参考：PaddleOCR-PP-OCRv4推理详解…...

编程日记 2024/10/18 14:00:15

Tableau 2024.3 发布！表格可视化项扩展、空间参数和 Cloud 管理器等，助力企业大规模分析

在升级至最新版前，先来详细一览 Tableau 2024.2 的最新特性吧~ Tableau 发布新版本啦！作为今年的收官之作，Tableau 2024.3 在延续经典之余，也为用户带来了不少惊喜，让企业数据分析之旅更加丰富多彩。使用 Tableau Cl…...

编程日记 2024/10/18 13:58:13

即时通讯增加kafka渠道

此次给im服务增加kafka渠道，刚好最近有对SpringCloudStream进行了解，刚好用来练练手增加kafka渠道 pom.xml 引入stream相关依赖 <dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-strea…...

编程日记 2024/10/18 13:57:10

建造者模式和工厂模式的区别

工厂模式和建造者模式都是创建型设计模式，它们的主要作用都是为了简化对象的创建过程，但是它们在设计意图和实现细节上有着显著的区别。总结区别： 关注点不同： 工厂模式关注的是对象的创建。建造者模式关注的是对象的构造过程…...

编程日记 2024/10/18 13:56:09

GEE数据集——ERA5-陆地每日汇总--ECMWF气候再分析数据集

目录简介数据集说明 Dataset Availability Dataset Provider Collection Snippet 空间信息 Resolution Bands Table 变量代码代码链接结果引用许可网址推荐 0代码在线构建地图应用机器学习简介注（2024-04-19）： …...

编程日记 2024/10/18 13:55:08

Spring Boot 中的 @RequestMapping 和 Spring 中的 @RequestMapping 有什么区别？

在Spring框架中，RequestMapping注解用于映射Web请求到处理器（Controller）的方法上。在Spring Boot中，这个注解的使用方式和目的与Spring框架中是完全相同的。RequestMapping注解可以用于类或方法上，以声明请求的映射。…...

编程日记 2024/10/18 13:53:06

PROFINET开发或EtherNet/IP开发嵌入式归一板有用于工业称重秤

这是真实案例。然而，客户选择不展示其品牌名称。 Anybus嵌入式解决方案帮助工业称重设备制造商连接到任何工业网络。多网络连接使称重设备能够轻松访问不同的控制系统，从而加快上市时间。我们最终找到了HMSNetworks的Anybus解决方案。他们的成熟技术和专…...

编程日记 2024/10/18 13:52:04

【Kafka】Kafka源码解析之producer过程解读

从本篇开始打算用三篇文章分别介绍下Producer生产消费，Consumer消费消息以及Spring是如何集成Kafka 三部分，致于对于Broker的源码解析，因为是scala语言写的，暂时不打算进行学习分享。总体介绍 clients : 保存的是Kafka客户端…...

编程日记 2024/10/18 13:51:03

深度学习笔记20_数据增强

🍨 本文为🔗365天深度学习训练营中的学习记录博客🍖 原作者：K同学啊 | 接辅导、项目定制一、我的环境 1.语言环境：Python 3.9 2.编译器：Pycharm 3.深度学习环境：TensorFlow 2.10.0 二、GPU设置…...

编程日记 2024/10/18 13:50:02

模板变量与php变量对比做判断

${item.create_name}如何与php变量对比在PHP中，您可以通过将字符串内嵌到双引号中来将模板变量 ${item.create_name} 与PHP变量进行对比。如果您有一个PHP变量 $phpVariable 并且想要检查它是否与 ${item.create_name} 相同，您可以使用 str_replace 函…...

编程日记 2024/10/18 13:49:01

C语言 | Leetcode C语言题解之第485题最大连续1的个数

题目： 题解： int findMaxConsecutiveOnes(int* nums, int numsSize) {int maxCount 0, count 0;for (int i 0; i < numsSize; i) {if (nums[i] 1) {count;} else {maxCount fmax(maxCount, count);count 0;}}maxCount fmax(maxCount, count);…...

编程日记 2024/10/18 13:48:00

C语言复习概要（六）

公主请阅 1. 深入理解数组与指针在C语言中的应用1.1 数组名的理解 2. 使用指针访问数组3. 一维数组传参的本质4. 冒泡排序的实现5. 二级指针6. 指针数组7. 指针数组模拟二维数组8.总结 1. 深入理解数组与指针在C语言中的应用数组与指针是C语言的核心概念之一，理解…...

编程日记 2024/10/18 13:42:54

PyQt 入门教程（2）搭建开发环境

文章目录一、搭建开发环境1、安装PyQt5与pyqt5-tools2、配置QtDesigner3、配置Pyuic4、配置Pyrcc 一、搭建开发环境 1、安装PyQt5与pyqt5-tools PyQt5： PyQt的开发库。Pyqt5-tools： 它是一个包含多种工具的工具包，旨在帮助开发者更方便地使…...

编程日记 2024/10/18 13:39:50

Flink Kubernetes Operator

Flink Kubernetes Operator是一个用于在Kubernetes集群上管理Apache Flink应用的工具。一、基本概念 Flink Kubernetes Operator允许用户通过Kubernetes的原生工具（如kubectl）来管理Flink应用程序及其生命周期。它简化了Flink应用在Kubernetes集群上的…...

编程日记 2024/10/18 13:35:46

【最新华为OD机试E卷-支持在线评测】字符统计及重排(100分)多语言题解-(Python/C/JavaScript/Java/Cpp)

🍭 大家好这里是春秋招笔试突围，一枚热爱算法的程序员 💻 ACM金牌🏅️团队｜大厂实习经历｜多年算法竞赛经历 ✨ 本系列打算持续跟新华为OD-E/D卷的多语言AC题解 🧩 大部分包含 Python / C / Javascript / Java / Cpp 多语言代码 👏 感谢大家的订阅➕ 和喜欢�…...

编程日记 2024/10/18 13:33:44

springboot使用GDAL获取tif文件的缩略图并转为base64

springboot使用GDAL获取tif文件的缩略图并转为base64 首先需要安装gdal：https://blog.csdn.net/qq_61950936/article/details/142880279?spm1001.2014.3001.5501 然后是配置pom.xml文件： <dependency><groupId>o…...

编程日记 2024/10/18 13:30:41

Pytorch——pip下载安装pytorch慢的解决办法

一、找到需要下载的pytorch链接运行：pip install torch1.11.0cu113 torchvision0.12.0cu113 torchaudio0.11.0 --extra-index-url https://download.pytorch.org/whl/cu113。然后得到： 我这里为：https://download.pytorch.org/whl/cu113/t…...

编程日记 2024/10/18 13:27:38

uniapp微信小程序调用百度OCR

uniapp编写微信小程序调用百度OCR 公司有一个识别行驶证需求，调用百度ocr识别使用了image-tools这个插件，因为百度ocr接口用图片的base64 这里只是简单演示，accesstoken获取接口还是要放在服务器端，不然就暴露了自己的百度项目k…...

编程日记 2024/10/18 13:25:35

Vue3+TS项目---实用的复杂类型定义总结

namespace 概念在TypeScript中，namespace是一种用于组织代码得结构，主要用于将相关得功能（例如类、接口、函数等）组合在一起。它可以帮助避免命名冲突，尤其是在大项目中。用法 1.定义命名空间使用namespace关键…...

编程日记 2024/10/18 13:24:33

DeepSeek 赋能智慧能源：微电网优化调度的智能革新路径

目录一、智慧能源微电网优化调度概述1.1 智慧能源微电网概念1.2 优化调度的重要性1.3 目前面临的挑战二、DeepSeek 技术探秘2.1 DeepSeek 技术原理2.2 DeepSeek 独特优势2.3 DeepSeek 在 AI 领域地位三、DeepSeek 在微电网优化调度中的应用剖析3.1 数据处理与分析3.2 预测与…...

编程新知 2025/11/20 2:48:44

模型参数、模型存储精度、参数与显存

模型参数量衡量单位 M：百万（Million） B：十亿（Billion） 1 B 1000 M 1B 1000M 1B1000M 参数存储精度模型参数是固定的，但是一个参数所表示多少字节不一定，需要看这个参数以什么…...

编程新知 2025/12/20 12:32:08

spring：实例工厂方法获取bean

spring处理使用静态工厂方法获取bean实例，也可以通过实例工厂方法获取bean实例。实例工厂方法步骤如下： 定义实例工厂类（Java代码），定义实例工厂（xml），定义调用实例工厂&#xff…...

编程新知 2025/11/25 22:46:30

【单片机期末】单片机系统设计

主要内容：系统状态机，系统时基，系统需求分析，系统构建，系统状态流图一、题目要求二、绘制系统状态流图题目：根据上述描述绘制系统状态流图，注明状态转移条件及方向。三、利用定时器产生时…...

编程新知 2025/12/25 9:29:48

【服务器压力测试】本地PC电脑作为服务器运行时出现卡顿和资源紧张（Windows/Linux）

要让本地PC电脑作为服务器运行时出现卡顿和资源紧张的情况，可以通过以下几种方式模拟或触发： 1. 增加CPU负载运行大量计算密集型任务，例如： 使用多线程循环执行复杂计算（如数学运算、加密解密等）。运行图…...

编程新知 2025/11/30 10:30:15

leetcodeSQL解题：3564. 季节性销售分析

leetcodeSQL解题：3564. 季节性销售分析题目： 表：sales ---------------------- | Column Name | Type | ---------------------- | sale_id | int | | product_id | int | | sale_date | date | | quantity | int | | price | decimal | -…...

编程新知 2025/10/5 19:58:27

C# SqlSugar：依赖注入与仓储模式实践

C# SqlSugar：依赖注入与仓储模式实践在 C# 的应用开发中，数据库操作是必不可少的环节。为了让数据访问层更加简洁、高效且易于维护，许多开发者会选择成熟的 ORM（对象关系映射）框架，SqlSugar 就是其中备受…...

编程新知 2025/11/25 6:49:02

均衡后的SNRSINR

本文主要摘自参考文献中的前两篇，相关文献中经常会出现MIMO检测后的SINR不过一直没有找到相关数学推到过程，其中文献[1]中给出了相关原理在此仅做记录。 1. 系统模型复信道模型 n t n_t nt 根发送天线， n r n_r nr 根接收天线的 MIMO 系…...

编程新知 2025/12/9 19:30:18

NPOI Excel用OLE对象的形式插入文件附件以及插入图片

static void Main(string[] args) {XlsWithObjData();Console.WriteLine("输出完成"); }static void XlsWithObjData() {// 创建工作簿和单元格,只有HSSFWorkbook,XSSFWorkbook不可以HSSFWorkbook workbook new HSSFWorkbook();HSSFSheet sheet (HSSFSheet)workboo…...

编程新知 2025/10/6 2:06:51

springboot 日志类切面，接口成功记录日志，失败不记录

springboot 日志类切面，接口成功记录日志，失败不记录自定义一个注解方法 import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target;/***…...

编程新知 2025/12/26 18:52:55

1. router 相关理解

1.1 vue-router 的理解

1.2 对 SPA 应用的理解

1.3 路由的理解

2. 路由的基本使用

3. 几个注意点

4. 多级路由

5. 路由的 query 参数

6. 命名路由

6.1 如何使用命名路由

7. 路由的 params 参数

8. 路由的 props 配置

9. <router-link>的 replace 属性

10. 编程式路由导航

11. 缓存路由组件

12. 两个新的生命周期钩子

13. 路由守卫

13.1 全局守卫

13.2 独享守卫

12.3 组件内守卫

13. 路由器的两种工作模式

13.1 hash模式：

13.2 history模式：

14. 路由的使用 案例

14.1 路由的基本使用 案例

main.js

index.js

App.vue

About.vue

Home.vue

14.2 多级路由 案例

main.js

index.js

App.vue

About.vue

Home.vue

Message.vue

News.vue

Banner.vue

14.3 路由的 query 参数 案例

main.js

index.js

App.vue

About.vue

Home.vue

Message.vue

News.vue

Detail.vue

Banner.vue

14.4 使用命名路由 案例

main.js

index.js

App.vue

About.vue

Home.vue

Message.vue

News.vue

Detail.vue

Banner.vue

14.5 路由的 params 参数 案例

main.js

index.js

App.vue

About.vue

Home.vue

Message.vue

News.vue

Detail.vue

Banner.vue

14.6 路由的 props 配置 案例

main.js

index.js

App.vue

About.vue

Home.vue

Message.vue

News.vue

Detail.vue

Banner.vue

14.7 <router-link>的 replace 属性的 案例

9. `<router-link>`的 replace 属性

14. 路由的使用案例

14.1 路由的基本使用案例

14.2 多级路由案例

14.3 路由的 query 参数案例

14.4 使用命名路由案例

14.5 路由的 params 参数案例

14.6 路由的 props 配置案例

14.7 `<router-link>`的 replace 属性的案例

14.8 编程式路由导航案例

14.9 缓存路由组件案例

14.10 两个新的生命周期钩子案例

14.11 全局守卫案例

14.12 独享守卫案例

14.13 组件内守卫案例