<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>example</title>
  <script src="./mvvm.js" charset="utf-8"></script>
</head>
<body>
  <div id="mvvm">
    <h2>{{name}}</h2>
    <input type="text" x-model="name">
    <h3>{{val}}</h3>
  </div>
</body>
<script>
const myvue = new MyVue({
  el: '#mvvm',
  data: {
      name: '123',
      val: 222,
    },
});
</script>
</html>