<template id="home"> //home模板，里面含子视口
 <div>
  <router-link to="/home/login">登录</router-link>
  <router-link to="/home/zhuce">注册</router-link>

  <router-view></router-view>
 </div>
</template>
<template id="news"> //消息模板
 <div>news</div>
</template>
<template id="login"> //home模板下的登录
 <div>this is login</div>
</template>

<template id="zhuce"> //home模板下的注册
 <div>this is zhuce</div>
</template>

 const home={template:"#home"};
 const news={template:'#news'};
 const login={template:'#login'};
 const zhuce={template:'#zhuce'};

 var rout=[
  {path:'/',redirect:'/home'}, //重定向为home ，当html后面哈希值为空时，默认显示home
  {
  path:'/home',
  component:home, //模板注册
  redirect:'/home/login',//子视口的重定向 默认登录
  children:[
   {path:'/home/login',component:login}, //配置子模板
   {path:'/home/zhuce',component:zhuce}
  ]},
  {path:'/news',component:news}
 ];

 var router=new VueRouter({  //实例化一个vuerouter
  routes:rout
 });

 const app = new Vue({
  router
 }).$mount('#app')