examples/intro/browser-io.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">

  <title>Browser IO</title>
</head>
<body>

<input id="first_name">
<input id="last_name">
<button id="go">Say hi!</button>

<div id="result"></div>

<script src="browser-io.js"></script>

</body>
</html>