<!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>
