https://rascalpowermobility.com/js/countdown.js

1(function($) {
2
3	'use strict';
4
5	$.fn.countdown = function(options, callback) {
6
7		// :: custom 'this' selector
8		var thisEl = $(this);
9
10		// :: array of custom settings
11		var settings = { 
12			'date': null,
13			'format': null
14		};
15
16		// :: append the settings array to options
17		if(options) {
18			$.extend(settings, options);
19		}
20		
21		// :: main countdown function
22		function countdown_proc() {
23			
24			var eventDate = Date.parse(settings['date']) / 1000;
25			var currentDate = Math.floor($.now() / 1000);
26			
27			if(eventDate <= currentDate) {
28				callback.call(this);
29				clearInterval(interval);
30			}
31			
32			var seconds = eventDate - currentDate;
33			
34			var days = Math.floor(seconds / (60 * 60 * 24)); //calculate the number of days
35			seconds -= days * 60 * 60 * 24; //update the seconds variable with no. of days removed
36			
37			var hours = Math.floor(seconds / (60 * 60));
38			seconds -= hours * 60 * 60; //update the seconds variable with no. of hours removed
39			
40			var minutes = Math.floor(seconds / 60);
41			seconds -= minutes * 60; //update the seconds variable with no. of minutes removed
42			
43			// :: conditional Ss
44			if (days == 1) { thisEl.find(".timeRefDays").text("day"); } else { thisEl.find(".timeRefDays").text("days"); }
45			if (hours == 1) { thisEl.find(".timeRefHours").text("hour"); } else { thisEl.find(".timeRefHours").text("hours"); }
46			if (minutes == 1) { thisEl.find(".timeRefMinutes").text("minute"); } else { thisEl.find(".timeRefMinutes").text("minutes"); }
47			if (seconds == 1) { thisEl.find(".timeRefSeconds").text("second"); } else { thisEl.find(".timeRefSeconds").text("seconds"); }
48			
49			// :: logic for the two_digits ON setting
50			if(settings['format'] == "on") {
51				var days = (String(days).length >= 2) ? days : "0" + days;
52				var hours = (String(hours).length >= 2) ? hours : "0" + hours;
53				var minutes = (String(minutes).length >= 2) ? minutes : "0" + minutes;
54				var seconds = (String(seconds).length >= 2) ? seconds : "0" + seconds;
55			}
56			
57			// :: update the countdown's html values.
58			if(!isNaN(eventDate)) {
59				thisEl.find(".days").text(days);
60				thisEl.find(".hours").text(hours);
61				thisEl.find(".minutes").text(minutes);
62				thisEl.find(".seconds").text(seconds);
63			} else { 
64				alert("Invalid date. Here's an example: 12 Tuesday 2012 17:30:00");
65				clearInterval(interval); 
66			}
67		}
68		
69		// :: run the function
70		countdown_proc();
71		
72		// :: loop the function
73		var interval = setInterval(countdown_proc, 1000);
74		
75	}
76}) (jQuery);