Posted By

camdagr8 on 11/20/13

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/ Published in: JavaScript

Calculates the time in hh:mm:ss between two dates

Usage:
var past = new Date('1/1/2013');
var now = new Date();

var lapsed = past.lapsed(now);

Date.prototype.lapsed = function (now) {
	now = now || new Date();

var milliseconds = Math.abs(this.getTime() - now.getTime());

var oneHour = 3600000;
	var oneMinute = 60000;
	var oneSecond = 1000;
	var hours = 0;
	var minutes = 0;
	var result;
	var seconds = 0;

if (milliseconds >= oneHour) { hours = Math.floor(milliseconds / oneHour); }

milliseconds = hours > 0 ? (milliseconds - hours * oneHour) : milliseconds;

if (milliseconds >= oneMinute) { minutes = Math.floor(milliseconds / oneMinute); }

milliseconds = minutes > 0 ? (milliseconds - minutes * oneMinute) : milliseconds;

if (milliseconds >= oneSecond) { seconds = Math.floor(milliseconds / oneSecond); }

milliseconds = seconds > 0 ? (milliseconds - seconds * oneSecond) : milliseconds;

if (hours > 0) { result = (hours > 9 ? hours : "0" + hours) + ":"; }
	else { result = "00:"; }

if (minutes > 0) { result += (minutes > 9 ? minutes : "0" + minutes) + ":"; }
	else { result += "00:"; }

if (seconds > 0) { result += (seconds > 9 ? seconds : "0" + seconds); }
	else { result += "00"; }

return result;
};

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