index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Two way data binding</title>
  </head>
  <body>
    <div id="app">
      <label for="firstname">First Name: </label>
      <input
        type="text"
        name="firstname"
        data-model="firstname"
        data-bind="firstname"
      />
      <p data-bind="firstname"></p>

      <br />

      <label for="lastname">Last Name: </label>
      <input
        type="text"
        name="lastname"
        data-model="lastname"
        data-bind="lastname"
      />
      <p data-bind="lastname"></p>
    </div>
    <script type="module" src="/src/main.ts"></script>
  </body>
</html>