1const date1 = new Date('7/13/2010');
2const date2 = new Date('12/15/2010');
3console.log(getDifferenceInDays(date1, date2));
4console.log(getDifferenceInHours(date1, date2));
5console.log(getDifferenceInMinutes(date1, date2));
6console.log(getDifferenceInSeconds(date1, date2));
7
8function getDifferenceInDays(date1, date2) {
9  const diffInMs = Math.abs(date2 - date1);
10  return diffInMs / (1000 * 60 * 60 * 24);
11}
12
13function getDifferenceInHours(date1, date2) {
14  const diffInMs = Math.abs(date2 - date1);
15  return diffInMs / (1000 * 60 * 60);
16}
17
18function getDifferenceInMinutes(date1, date2) {
19  const diffInMs = Math.abs(date2 - date1);
20  return diffInMs / (1000 * 60);
21}
22
23function getDifferenceInSeconds(date1, date2) {
24  const diffInMs = Math.abs(date2 - date1);
25  return diffInMs / 1000;
26}

1const date1 = new Date('7/13/2010');
2const date2 = new Date('12/15/2010');
3const diffTime = Math.abs(date2 - date1);
4const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24)); 
5console.log(diffTime + " milliseconds");
6console.log(diffDays + " days");

1var date1 = new Date();    
2 var date2 = new Date("2025/07/30 21:59:00");
3  
4showDiff(date1,date2);
5
6function showDiff(date1, date2){
7
8    var diff = (date2 - date1)/1000;
9    diff = Math.abs(Math.floor(diff));
10
11    var days = Math.floor(diff/(24*60*60));
12    var leftSec = diff - days * 24*60*60;
13
14    var hrs = Math.floor(leftSec/(60*60));
15    var leftSec = leftSec - hrs * 60*60;
16
17    var min = Math.floor(leftSec/(60));
18    var leftSec = leftSec - min * 60;
19	console.info("You have " + days + " days " + hrs + " hours " + min + " minutes and " + leftSec + " seconds");
20   
21    return {
22        d: days,
23        h: hrs,
24        i: min,
25        s: leftSec
26    };
27}

1Gettings diffrence between daytes