<div id="myDiv">
 <h1>简单路由</h1>
 <router-link to="/foo">Go to foo</router-link>  
 <router-link to="/bar">Go to bar</router-link>  

// 渲染出口
 <router-view></router-view>
</div> 

  var foo={template:"<p>我是foo 组件</p>"};
  var bar={template:"<p>我是bar 组件</p>"};

var routes = [
   {path:'/foo',component:foo},
   {path:'/bar',component:b ar},
  ];

// 这里还可以传入其他配置
const router = new VueRouter({
   routes   // （缩写）相当于 routes: routes; 
  });

 var routerVue = new Vue({
   router
  }).$mount("#myDiv"); 

<div id="myDiv">
// 点击对应链接时传入对应参数foo 和 bar
 <router-link to="/User/:foo">Go to foo</router-link> 
 <router-link to="/User/:bar">Go to bar</router-link> 

  <router-view></router-view>
</div> 

const User = {
   template:'<p>我的ID是{{ $route.params.id }}</p>',
// 在路由切换时可以观察路由
   watch:{
    '$route'(to,form){
     console.log(to); //要到达的
     console.log(form);
    }
   }
  }

  const router = new VueRouter({
   routes:[
     {path:'/user/:id',component:User} // 标记动态参数 id
   ]
  });

  var myVue = new Vue({
    router
  }).$mount("#myDiv")

<div id="myDiv">
 <router-link to="/User/:foo">Go to foo</router-link> 
 <router-link to="/User/:bar">Go to bar</router-link> 

  <router-view></router-view>
</div> 

const User = {
   template:'<div><p>我的ID是{{ $route.params.id }}</p><router-link to="/user/childone">ChildOne</router-link><router-link to="/user/childtwo">ChildOne</router-link><router-view></router-view></div>',
   }

   // 子路由
   const userChildOne = {
    template:'<div>我是 userChildOne</div>'
   }
   const userChildTwo = {
    template:'<div>我是 userChildTwo</div>'
   }
  const router = new VueRouter({
   routes:[
     {path:'/user/:id',component:User,
      children:[ // 用法和参数和routes 一样
       {path:"/user/childone",component:userChildOne},
       {path:"/user/childtwo",component:userChildTwo}
      ]

     }
   ]
  });

  var myVue = new Vue({
    router
  }).$mount("#myDiv")

<div id="myDiv">
<!-- 要用v-bind 的绑定to -->
 <router-link :to="{name:'userOne',params:{userId:'123'}}">Go to foo</router-link> 
 <router-link :to="{name:'userTwo',params:{userId:'456'}}">Go to bar</router-link> 

  <router-view></router-view>
</div> 

const User = {
   template:'<p>我的ID是{{ $route.params.userId }}</p>',
   watch:{
    '$route'(to,form){
     console.log(to);
     console.log(form);
    }
   }
  }

  const router = new VueRouter({
   routes:[
   // name 一一对应上
     {path:'/user/:userId',name:"userOne",component:User},
     {path:'/user/:userId',name:"userTwo",component:User}
   ]
  });

  var myVue = new Vue({
    router
  }).$mount("#myDiv")

<div id="myDiv">
<!-- 要用v-bind 的绑定to -->
 <router-link :to="{name:'userOne',params:{userId:'123'}}">Go to foo</router-link> 
 <router-link :to="{name:'userTwo',params:{userId:'456'}}">Go to bar</router-link> 
<!-- 视图命名 如果不写name 则为默认为 default-->
  <router-view></router-view>
  <router-view name='b'></router-view>
</div> 

// 四个模板
  const UserA = {
   template:'<p>我是one,ID是{{ $route.params.userId }}</p>',
  }
  const UserB = {
   template:'<p>我是two,ID是{{ $route.params.userId }}</p>',
  }
  const UserC = {
   template:'<p>我是three,ID是{{ <1ro></1ro>ute.params.userId }}</p>',
  }
  const UserD = {
   template:'<p>我是four,ID是{{ $route.params.userId }}</p>',
  }
  const router = new VueRouter({
   routes:[
   // name 一一对应上
     { 
      path:'/user/:userId',
      name:"userOne",
      components:{ // 注意这里为components 多个“ s ”
        default:UserA,
        b:UserB
      }
     },
     { 
      path:'/user/:userId',
      name:"userTwo",
      components:{
        default:UserD,
        b:UserC
      }
    }
   ]
  });

  var myVue = new Vue({
    router
  }).$mount("#myDiv")

<div id="myDiv">
 <h2>效果查看地址栏最后面的变化</h2>
 <router-link to="/User/foo">Go to foo</router-link> 
 <router-link to="/User/bar">Go to bar</router-link> 
 <router-link to="/User/Car">Go to bar</router-link> 

  <router-view></router-view>
</div> 

  const User = {
   template:'<p>我是同一个页面</p>',
  }
  const router = new VueRouter({
   mode:"history",
   routes:[
     { path:'/User/foo',component:User},
     { path:'/User/bar',redirect: '/User/foo',component:User},
     // 重定向的目标也可以是一个命名的路由：
     // 甚至是一个方法，动态返回重定向目标：

     // 别名设置
     { path:'/User/foo',alias: '/User/Car'}

   ]
  });

  var myVue = new Vue({ 
    router
  }).$mount("#myDiv")