VUE_vue cdn引用使用router路由

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Vue-router</title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
    <script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
</head>
<body>
<div id="app">
    <router-view></router-view>
</div>

<script>
    const foo1 = {
        template:`<div>
                我是foo1
                <button @click="foo2">go foo2</button>
            </div>`,
        methods:{
            foo2(){
                this.$router.push('/foo2')
            }
        }
    }
    const foo2 = {
        template:`<div>
                我是foo2
                <button @click="foo1">go foo1</button>
            </div>`,
        methods:{
            foo1(){
                this.$router.push('/foo1')
            }
        }
    }
    const routes  = [
        {path:'/foo1',component:foo1},
        {path:'/foo2',component:foo2},
    ]
    const router = new VueRouter({
        routes 
    })
    var vm = new Vue({
        el: '#app',
        router,
        data: {

        },
        methods: {
            
        },
    });
</script>
</body>

</html>