嵌套路由--和--动态路由匹配(★★★)

var User = { template: "<div>This is User</div>" }
//Login组件中的模板代码里面包含了子级路由链接以及子级路由的占位符
    var Login = { template: `<div>
        <h1>This is Login</h1>
        <hr>
        <router-link to="/login/account">账号密码登录</router-link>
        <router-link to="/login/phone">扫码登录</router-link>
        <!-- 子路由组件将会在router-view中显示 -->
        <router-view></router-view>
        </div>` }

    //定义两个子级路由组件
    var account = { template:"<div>账号：<input><br>密码：<input></div>"};
    var phone = { template:"<h1>扫我二维码</h1>"};
    var myRouter = new VueRouter({
        //routes是路由规则数组
        routes: [
            { path:"/",redirect:"/user"},
            { path: "/user", component: User },
            { 
                path: "/login", 
                component: Login,
                //通过children属性为/login添加子路由规则
                children:[
                    { path: "/login/account", component: account },
                    { path: "/login/phone", component: phone },
                ]
            }
        ]
    })

    var vm = new Vue({
        el: '#app',
        data: {},
        methods: {},
        router:myRouter
    });

var User = { template:"<div>用户：{{$route.params.id}}</div>"}

var myRouter = new VueRouter({
 
//routes是路由规则数组
routes: [
    //通过/:参数名  的形式传递参数 
    { path: "/user/:id", component: User },
    
]
})