Lucee Developer

function dateDiff(datepart, fromdate, todate)// datepart: 'w', 'd', 'h', 'n', 's'
{
	datepart = datepart.toLowerCase();
	var diff = todate - fromdate;
	var divideBy = {
		  w:604800000 //1000*60*60*24*7
		, d:86400000 // 1000*60*60*24
		, h:3600000 // 1000*60*60
		, n:60000 // 1000*60
		, s:1000
	};
	return Math.floor(diff/divideBy[datepart]);
}