<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript oninput and onpropertychangte Event Alternative</title>
</head>
<body>
<input id="input" type="text">
<div id="info">Type something in above input.</div>
<script src="polling.js"></script>
<script type="text/javascript">
// focus to input element.
document.getElementById('input').focus();
// start to polling input element
polling();
</script>
</body>
</html>