·如果要响应路由的参数变化,可以通过 watch监听$route

    侦听路由参数 - 图1

    <!DOCTYPE html> <html lang=“en”> <head> <meta charset=“UTF-8”> <meta name=“viewport” content=“width=device-width, initial-scale=1.0”> <title>Document</title> </head> <body> <div id=“app”> <router-link to=“/user/1”>用户1</router-link> <router-link to=“/user/2”>用户2</router-link> <router-link to=“/user/3”>用户3</router-link> <router-view></router-view> </div> <script src=“lib/vue.js”></script> <script src=“lib/vue-router.js”></script> <script> // 设置组件 var User = { template: `
    这是用户 {{ $route.params.id }} 的功能
    `, // 由于组件没有重新创建，所以生命周期钩子只能执行一次 /* created () { console.log(‘创建了组件的实例’); } */ watch: { $route (route) { // console.log(route); console.log(route.params.id) } } }; // 设置路由规则 var routes = [ { path: ‘/user/:id’, component: User } ]; var router = new VueRouter({ routes }); var vm = new Vue({ el: ‘#app’, router }); </script> </body> </html>