JavaScript Tutorial/Date/getUTCMilliseconds
Date.getUTCMilliseconds()
The getUTCMilliseconds() method returns the millisecond portion of the date converted to universal time and expressed as an integer from 0 to 999.
<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
<!--
dateVar = new Date();
alert(dateVar.getUTCMilliseconds());
// -->
</script>
</head>
<body>
</body>
</html>