Write a JavaScript program to demonstrate use of setinterval() method.
<html>
<head>
<title>setInterval() method</title>
</head>
<body>
<h2 id="panel"></h2>
<script>
var id = setInterval('timer()', 1000)
function timer()
{
var panel = document.getElementById('panel')
var d = new Date()
panel.innerHTML = d.toLocaleTimeString()
}
</script>
</body>
</html>
