<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title> Hello Vue!</title> </head> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> <body> <div id="app"> <h1>我的第一个 {{ message }}</h1> </div> </body> <script > var app = new Vue({ el: '#app', data: { message: 'Hello Vue!' } }) </script> </html>