<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id='app'>
{{ message }}
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.1.10/vue.js"></script>
<script>
new Vue({
el: '#app',
data: {
message: 'Hello World'
}
})
</script>
</body>
</html>