eachを使ってオブジェクトをループにかける

ソースコード

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
</head>
<body>
<div id="days"></div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.js"></script>
<script type="text/javascript">
	(function ($) {
		var days = {Sunday: 0, Monday: 1, Tuesday: 2, Wednesday: 3, Thursday: 4, Friday: 5, Saturday: 6};
		$.each(days, function (key, value) {
			$('#days').append('<li>' + key + ' (' + value + ')</li>');
		});
	})(jQuery);
</script>
</body>
</html>