Getting Date Difference in Javascript

Question

I've been searching to get the date difference in Javascript, but I am not quite getting the answers I need.

When I compare 2015/12/02 to 2015/11/30, the date difference should be 2. But with my code, I get -28. how do I resolve this issue - also considering the days of the months differ.

    var btdate = new Date('2015/11/30');
    var etdate = new Date('2015/12/02');

    var diff2 = etdate.getDate() - btdate.getDate();
    console.log(diff2);

Possible duplicate of [Get difference between 2 dates in javascript?](http://stackoverflow.com/questions/3224834/get-difference-between-2-dates-in-javascript) — Buzz, Dec 02 '15 at 05:45
Date returns the day of the month. So you'd need to factor in the differences between each month — Binvention, Dec 02 '15 at 05:46

Zohaib Ijaz · Answer 1 · 2015-12-02T05:53:33.863

0

It is because getDate() just gives you a day number e.g. in your case 30 and 2, so you are getting -28 as difference

if you want to get the number of days between two dates, use getTime() and then convert the difference to days

var diff = etdate.getTime() - btdate.getTime();
var days = diff/1000/60/60/24; // 1000 for milli seconds, 60 for seconds, 60 for minutes, 24 for hours in a day.

edited Dec 02 '15 at 05:53

answered Dec 02 '15 at 05:46

Zohaib Ijaz

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score 0 · Answer 2 · answered Dec 02 '15 at 05:47

Get the difference in milliseconds and convert it to dates

var btdte = new Date('2015/11/30');
var etdate = new Date('2015/12/02');

//Get time difference in milliseconds
var timeDiff = Math.abs(etdate.getTime() - btdte.getTime());

//Convert milliseconds to dates
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24)); 

console.log(diffDays);

score 0 · Answer 3 · answered Dec 02 '15 at 05:49

var date1 = new Date(2010, 6, 17); var date2 = new Date(2013, 12, 18);

var diff = new Date(date2.getTime() - date1.getTime());

// diff is: Thu Jul 05 1973 04:00:00 GMT+0300 (EEST)

console.log(diff.getUTCDate() - 1); // Gives day count of difference // 4

Schechter · Answer 4 · 2015-12-22T19:12:54.253

0

This will work for you.

function days(begin, end){
  var diff = new Date(end) - new Date(begin);
  return diff / 1000 / 60 / 60 / 24
}

If you want to do a lot more date manipulation Moment.js might be a good library for you.

> days('2015/11/30','2015/12/2')
2
> days('2015/11/30','2015/12/3')
3
> days('2015/11/30','2016/12/3')
369

edited Dec 22 '15 at 19:12

answered Dec 02 '15 at 06:03

Schechter

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score 0 · Answer 5 · answered Dec 02 '15 at 06:10

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You can use moment.js to perform any operation on dates.

To get number of days between 2 days:

var startDate = moment("12-25-2014", "MM-DD-YYYY");
var endDate = moment("10-18-2015", "MM-DD-YYYY");

var diffInDays = endDate.diff(startDate, 'days') // 297

answered Dec 02 '15 at 06:10

Kunal Kapadia

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score 0 · Answer 6 · answered Dec 03 '15 at 05:15

I have noticed simple solution for this ,

var btdate = new Date('2015/11/30');
var etdate = new Date('2015/12/02');

var diff2 = etdate - btdate; //here diffrence in milliseconds

//lets convert milliseconds into days.
diff2 /= 1000; //to seconds
diff2 /= 60;  //to minutes
diff2 /= 60;  //to hours
diff2 /= 24;  //to days
console.log(diff2);

Getting Date Difference in Javascript

6 Answers6