[JavaScript知识库]路由跳转对浏览器历史记录的影响

浏览器历史记录有两种写入方式：push和replace。
push时将追加历史记录；replace时将替换历史记录。路由跳转时默认是push。

默认push追加历史记录

看具体例子吧，项目目录如下。

• 一般组件component/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>

<style>

</style>

• 路由组件pages/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>
      <div>
        <router-view></router-view>
      </div>
    </div>
  </div>
</template>

<script>
export default {
    name:'Home'
}
</script>

<style>

</style>

• 路由组件pages/About.vue

<template>
  <h2>我是About的内容</h2>
</template>

<script>
export default {
    name:'About'
}
</script>

<style>

</style>

• 路由组件pages/News.vue

<template>
    <ul>
        <li>news001</li>
        <li>news002</li>
        <li>news003</li>
    </ul>
</template>

<script>
export default {
    name:"News"
}
</script>

<style>

</style>

• 路由组件pages/Message.vue

<template>
   <div>
       <ul>
           <li v-for="message in messageList" :key="message.id">
               <router-link :to="{
                    path:'/home/message/detail',
                    query:{
                        id:message.id,
                        title:message.title
                    }
                   }">
                {{message.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01"},
                {id:"002",title:"消息02"},
                {id:"003",title:"消息03"},
            ]
        }
    }
}
</script>

<style>

</style>

• 路由组件pages/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']
}
</script>

<style>

</style>

• 路由器router/index.js

import VueRouter from "vue-router";
import Home from "../pages/Home";
import About from "../pages/About";
import News from "../pages/News";
import Message from "../pages/Message";
import Detail from "../pages/Detail";

export default new VueRouter({
    routes:[
        {
            path:"/about",
            component:About
        },
        {
            path:"/home",
            component:Home,
            children:[
                {
                    path:"message",
                    component:Message,
                    children:[
                        {
                            path:"detail",
                            component:Detail,
                            props($route){
                                return {
                                    id:$route.query.id,
                                    title:$route.query.title
                                }
                            }
                        }
                    ]
                },
                {
                    path:"news",
                    component:News
                }
            ]
        }
    ]
})

• 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">
           <router-link to="/about" active-class="active" class="list-group-item">About</router-link>
          <router-link to="/home" active-class="active" class="list-group-item">Home</router-link>
        </div>
      </div>
      <div class="col-xs-6">
        <div class="panel">
          <div class="panel-body">
            <router-view></router-view>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Banner from "./components/Banner.vue";

export default {
  name: 'App',
  components:{
    Banner
  }
}
</script>

• 入口文件main.js

import Vue from 'vue'
import App from './App.vue'
import VueRouter from "vue-router";

import router from "./router/index";

Vue.config.productionTip = false;

Vue.use(VueRouter);

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

• 启动应用，测试效果。
  
  1. http://localhost:8080/#/

  浏览器历史记录有：
  http://localhost:8080/#/

  2. http://localhost:8080/#/about

  浏览器历史记录有：
  http://localhost:8080/#/
  http://localhost:8080/#/about

  3. http://localhost:8080/#/home

  浏览器历史记录有：
  http://localhost:8080/#/
  http://localhost:8080/#/about
  http://localhost:8080/#/home

  4. http://localhost:8080/#/home/news

  浏览器历史记录有：
  http://localhost:8080/#/
  http://localhost:8080/#/about
  http://localhost:8080/#/home
  http://localhost:8080/#/home/news

  5. 点←回退，回到 http://localhost:8080/#/home

  浏览器历史记录有：
  http://localhost:8080/#/
  http://localhost:8080/#/about
  http://localhost:8080/#/home

  6. 继续点←回退，回到 http://localhost:8080/#/about

  浏览器历史记录有：
  http://localhost:8080/#/
  http://localhost:8080/#/about

  7. 继续点←回退，回到 http://localhost:8080/#/，此时←置灰，不可回退

routerLink的replace属性将替换历史记录

• 修改App.vue，给routerLink添加replace属性：replace或者:replace="true"均可。

<template>
  <div>
    <div class="row">
      <Banner/>
    </div>
    <div class="row">
      <div class="col-xs-2 col-xs-offset-2">
        <div class="list-group">
          <!-- <router-link :replace="true" to="/about" active-class="active" class="list-group-item">About</router-link> -->
          <router-link replace to="/about" active-class="active" class="list-group-item">About</router-link>
          <router-link replace to="/home" active-class="active" class="list-group-item">Home</router-link>
        </div>
      </div>
      <div class="col-xs-6">
        <div class="panel">
          <div class="panel-body">
            <router-view></router-view>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Banner from "./components/Banner.vue";

export default {
  name: 'App',
  components:{
    Banner
  }
}
</script>

• 启动应用，测试效果。
  
  1. http://localhost:8080/#/

  浏览器历史记录有：
  http://localhost:8080/#/

  2. http://localhost:8080/#/about

  浏览器历史记录有：
  http://localhost:8080/#/about

  3. http://localhost:8080/#/home

  浏览器历史记录有：
  http://localhost:8080/#/home

  4. http://localhost:8080/#/home/news

  浏览器历史记录有：
  http://localhost:8080/#/home
  http://localhost:8080/#/home/news

  5. 点←回退，回到 http://localhost:8080/#/home ，此时←置灰，不可回退。