1.路由传参

1.查询字符串：
/user/regist?uname=jack&upwd=123
接收：
{{$route.query}}

2.rest风格传参
/user/login/rose/456

<div id='app'>
   <router-link to='/index'>首页</router-link>
   <router-link to='/user'>用户页</router-link>
   <router-view></router-view>
  </div>
   <script src="Vue/dist/vue.js"></script>
    <script src="Vue-router/dist/vue-router.js"></script>
   <script>
       //2.创建组件
       var  Index={
           template:`
             <h1>这是首页</h1>
           `
       }
       var User={
           template:`
           <div>
             <h1>这是用户页</h1>
             <ul>
               <li>
                  <router-link to='/user/regist?uname=jack&upwd=123456'>注册</router-link>
               </li> 
                <li>
                  <router-link to='/user/login/rose/123456'>登录</router-link>
               </li>
            </ul>
            <router-view></router-view>
           </div>
         `
       }
       
       
       var Regist={
           template:`
             <h3>这是注册页</h3>
             <a href="#">{{$route.query}}</a>
             <a href="#">
                 uname:{{$route.query.uname}}
             </a>
             <a href="#">
                 upwd:{{$route.query.upwd}}
             </a>
          `
       }
       
        var Login={
           template:`
            <div>
             <h3>这是登录页</h3>
             <a>{{$route.params}}</a>
             <a>{{$route.params.uname}}</a>
             <a>{{$route.params.upwd}}</a>
            </div>
          `
       }
       
       //3.配置路由
       const routes=[
           {path:'/',component:Index},
           {path:'/index',component:Index},
           {
               path:'/user',
               component:User,
               children:[
                   {path:'regist',component:Regist},
                   {path:'login/:uname/:upwd',component:Login}
               ]
           }
       ]
       
       //4.创建路由实例
       const router=new VueRouter({
           routes:routes
       })
       
       //5.把路由实例挂载到vue实例上
      new Vue({
          el:'#app',
          router:router//注册路由
      })      
 </script>

2.axios

版本：
1.0：vue-resource
2.0：axios 库
作用：前段页面和后台数据做交互
安装http-server： npm install http-server -g
下载axios： npm install axios
开启服务： http-server

<div id='app'>
     <router-link to='/home'>首页</router-link>
     <router-link to='/user'>用户页</router-link> 
     
      <router-view></router-view>
  </div>
   <script src="js/vue.js"></script>
   <script src="js/vue-router.js"></script>
   <script src="js/axios.js"></script>
   <script> 
       var Home={
           template:`
             <h1>这是首页</h1>
           `
       }
       
       var User={
           template:`
            <div>
                <h1>这是用户页</h1>
             <table border=1 cellspacing=0>
                <thead>
                     <tr>
                         <th>编号</th>
                         <th>名称</th>
                         <th>单价</th>
                         <th>数量</th>
                         <th>小计</th>
                     </tr>
                </thead>
                <tbody>
                      <tr v-for="value in list">
                         <td>{{value.num}}</td>
                         <td>{{value.pname}}</td>
                         <td>{{value.price}}</td>
                         <td>{{value.count}}</td>
                         <td>{{value.sub}}</td>
                      </tr>
                </tbody>
              </table>
            </div>
          `,      
       data:function(){
           return{
              list:null
           }
       },  
       mounted:function(){
           var self=this;
           axios({
               method:"get",
               url:'first.json'
           }).then(function(resp){
               console.log(resp.data)
               self.list=resp.data;
           }).catch(function(err){
               console.log(err)
           })
         }
       }
       
       const routes=[
           {path:'/',component:Home},
           {path:'/home',component:Home},
           {path:'/user',component:User}
       ]
       
       const router=new VueRouter({
           routes:routes,
           linkActiveClass:'active'
       })
       
       new Vue({
           el:'#app',
           router:router
       })       
    </script>