demo.html:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Timepicker Demo</title>
<link type="text/css" href="css/jquery-ui-1.8.17.custom.css" rel="stylesheet" />
<link type="text/css" href="css/jquery-ui-timepicker-addon.css" rel="stylesheet" />
<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.17.custom.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-timepicker-addon.js"></script>
<script type="text/javascript" src="js/jquery-ui-timepicker-zh-CN.js"></script>
<script type="text/javascript">
$(function () {
$(".ui_timepicker").datetimepicker({
showSecond: true,
timeFormat: 'hh:mm:ss',
stepHour: 1,
stepMinute: 1,
stepSecond: 1
})
})
</script>
</head>
<body>
<p><input type="text" name="datetime" class="ui_timepicker" value=""></p>
</body>
</html>
文章中牵扯到的js、css文件，网上很多。