<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>el:挂载点</title>
</head>
<body>{{message}}<div id="app">{{message}}<span>{{message}}</span></div><!-- 开发环境版本，包含了有帮助的命令行警告 --><script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script><script>var app=new Vue({el:"#app", //可以是class 也可以是标签data:{message:"黑马程序员"}})</script>
</body>
</html>
