vue-router实现组件间的跳转（参数传递）

通过VueRouter来实现组件之间的跳转：参数的传递，具体内容如下

login ---用户名--->main

①明确发送方和接收方

②配置接收方的路由地址
{path:'/myTest',component:TestComponent}
-->
{path:'/myTest/:id',component:TestComponent}

③接收方获取传递来的数据
this.$route.params.id

④跳转的时候，发送参数
this.$router.push('/myTest/20')
<router-link :to="'/myTest'+id">跳转</router-link>

代码：

<!doctype html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>传参</title>
  <script src="js/vue.js"></script>
  <script src="js/vue-router.js"></script>
 </head>
 <body>
 <div id="container">
    <p>{{msg}}</p>
    <!--指定容器 -->
    <router-view></router-view>
  </div>
  <script>
  //创建主页面组件
    var myMain = Vue.component("main-component",{
      //保存登录传递过来的数据
      data:function(){
    return {
     uName:''
    }
   },
      template:`
        <div>
          <h1>主页面用户名:{{uName}}</h1>
        </div>
      `,
      //挂载该组件时自动拿到数据
      beforeMount:function(){
        //接收参数
        console.log(this.$route.params);
        this.uName = this.$route.params.myName ;
      }
    })
    //创建登录页面组件
    var myLogin = Vue.component("login-component",{
      //保存用户输入的数据
      data:function(){
        return {
          userInput:""
        }
      },
      methods:{
        toMain:function(){
          //跳转到主页面，并将用户输入的名字发送过去
          this.$router.push("/main/"+this.userInput);
          console.log(this.userInput);
        }
      },
      template:`
        <div>
          <h1>登录页面</h1>
          <input type="text" v-model="userInput" placeholder="请输入用户名">
          <button @click="toMain">登录到主页面</button>
          <br>
          <router-link :to="'/main/'+userInput">登录到主页面</router-link>
        </div>
      `
    })
    var NotFound = Vue.component("not-found",{
      template:`
        <div>
          <h1>404 Page Not Found</h1>
          <router-link to="/login">返回登录页</router-link>
        </div>
      `
    })
    //配置路由词典
    const myRoutes = [
      {path:"",component:myLogin},
      {path:"/login",component:myLogin},
        //注意冒号,不用/否则会当成地址
      {path:"/main/:myName",component:myMain},
      //没有匹配到任何页面则跳转到notfound页面
      {path:"*",component:NotFound}
    ]
    const myRouter = new VueRouter({
      routes:myRoutes
    })
    new Vue({
      router:myRouter,
      el:"#container",
      data:{
        msg:"Hello VueJs"
      }
    })
//  注意,路由地址
  </script>
 </body>
</html>

<!doctype html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>传参练习</title>
  <script src="js/vue.js"></script>
  <script src="js/vue-router.js"></script>
 </head>
 <body>
 <div id="container">
    <p>{{msg}}</p>
<!-- -->
    <router-view></router-view>
  </div>
  <script>
//创建产品列表组件
    var myList = Vue.component("product-list",{
      //保存产品列表的数据
      data:function(){
        return{
          productList:["苹果","华为","三星","小米","vivo"]
        }
      },
      template:`
        <div>
          <h4>这是列表页</h4>
          <ul>
            <li v-for="(tmp,index) in productList">
            //将index传递过去
              <router-link v-bind:to="'/detail/'+index">{{tmp}}</router-link>
            </li>
          </ul>
        </div>
      `
    })
//详情页组件
    var myDetail = Vue.component("product-detail",{
      //保存传递过来的index
      data:function(){
        return{
          myIndex:""
        }
      },
      //在挂载完成后,将接收到的index赋值给myIndex
      mounted:function(){
          this.myIndex = this.$route.params.id;
      },
      template:`
        <div>
          <h4>这是详情页</h4>
          <p>这是id为：{{myIndex}}的产品</p>
        </div>
      `
    })
//页面找不到的时候
    var NotFound = Vue.component("not-found",{
      template:`
        <div>
          <h1>404 Page Not Found</h1>
        </div>
      `
    })
//  配置路由词典
    const myRoutes = [
      {path:"",component:myList},
      {path:"/list",component:myList},
      {path:"/detail/:id",component:myDetail},
      {path:"*",component:NotFound},
    ]
    const myRouter = new VueRouter({
      routes:myRoutes
    })
    new Vue({
      router:myRouter,
      el:"#container",
      data:{
        msg:"Hello VueJs"
      }
    })
  </script>
 </body>
</html>

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