Check if date/time is BETWEEN two other date/times Javascript

Question

var startDateTime = '15.04.2019 00:15';
var endDateTime = '17.05.2019 18:35';

var checkDateTime = '16.04.2019 13:15';

function(checkDateTime, startDateTime, endDateTime) {

// need codes to return true or false,.
// check "checkDateTime" is between "startDateTime" to "endDateTime"

}

You've tagged this with [tag:momentjs]; did you try using it? — , Apr 25 '19 at 06:11
Very similar to: [13291661](https://stackoverflow.com/questions/13291661/check-if-a-date-within-in-range). Almost a dupe. — RichS, Apr 25 '19 at 06:14
Possible dupe of [48405762](https://stackoverflow.com/questions/48405762/js-check-if-multiple-dates-are-within-range). If the array of dates were size 1...that would answer this.. — RichS, Apr 25 '19 at 06:15
You need to provide a [mcve] (And no, having an empty function does not count) — Alon Eitan, Apr 25 '19 at 06:16

RK_15 · Answer 1 · 2019-04-25T11:26:27.093

4

Try this code:

var startDateTime = getDate('15.04.2019 00:15');
var endDateTime = getDate('17.05.2019 18:35');

var checkDateTime = getDate('16.04.2019 13:15');

function isBetween(checkDateTime, startDateTime, endDateTime) {

    return (checkDateTime >= startDateTime &&  checkDateTime <= endDateTime);

}

function toDate(str){
  var [ dd, MM, yyyy, hh, mm ] = str.split(/[. :]/g);
  return new Date(`${MM}/${dd}/${yyyy} ${hh}:${mm}`);
}

console.log(isBetween(checkDate,startDate,endDate));

To compare it one time falls between a time interval on the same day use: -

var startTime = "00:35";
var endTime = "18:15";
var checkTime = "13:00";

function getMinutes(timeString){
    let [hh, mm] = timeString.split(":");
    return parseInt(hh)*60 + parseInt(mm);
}

function isTimeBetween(checkTime,startTime,endTime){
      checkTime = getMinutes(checkTime);
      return (checkTime >= getMinutes(startTime) && checkTime <= getMinutes(endTime));
}
console.log(isTimeBetween(checkTime,startTime,endTime));

edited Apr 25 '19 at 11:26

answered Apr 25 '19 at 06:26

RK_15

929
5
11

if I want to check only time span ? – Mizhar Raja Apr 25 '19 at 07:08
1

@Mizhar Raja timespan between which dates, between checkDate and startDate or checkDate and endDate – RK_15 Apr 25 '19 at 07:12
There is no date. only startTime and endTime. need to check specific time is between or no. – Mizhar Raja Apr 25 '19 at 07:33
var startTime = '00:15'; var endTime = '18:35'; var checkTime = '13:15'; function isBetween(checkTime, startTime, endTime) { // need code to check } – Mizhar Raja Apr 25 '19 at 07:35
1

@Mizhar Raja Check out the time under time interval code. May be this will help you. – RK_15 Apr 25 '19 at 11:27

score 1 · Answer 2 · answered Apr 25 '19 at 06:15

1

You can use new Date().getTime() to get the number of milliseconds since the Unix Epoch. So that you can compared the date/time with the result from this function. You can do sth like that:

return new Date(startDateTime).getTime() <= new Date(checkDateTime).getTime() <= new Date(endDateTime).getTime();

Check this out: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime

answered Apr 25 '19 at 06:15

Elvis Wong

348
2
8

Almost.. When I test this function, it also returns true if the date is out of the range. When I set `checkDateTime` to '06/16/2019 13:15' (out of range), the function returns `true`, but should be `false`. I think the conditional just needs to be separated by an &&. – RichS Apr 25 '19 at 06:47

score 1 · Answer 3 · answered Apr 25 '19 at 06:21

1

I would suggest to check if your checkDateTime is greater than your startDateTime and less then endDateTime.

function checkDateTime(checkDateTime, startDateTime, endDateTime) {
  return (new Date(startDateTime) >= new Date(checkDateTime))
      && (new Date(checkDateTime) <= new Date(endDateTime));
}

answered Apr 25 '19 at 06:21

marcobiedermann

4,317
3
24
37

If you go for this solution, I would also recommend to store `new Date(checkDateTime)` in a variable to improve the performance. I left it out by intention to avoid any unnecessary confusion – marcobiedermann Apr 25 '19 at 06:22

RichS · Answer 4 · 2019-04-25T07:10:35.493

Here is yet another option which adds the method directly to the Date prototype:

var startDateTime = new Date('04/15/2019 00:15');
var endDateTime = new Date('05/17/2019 18:35');

var checkDateTime = new Date('04/16/2019 13:15');
var outOfRangeDate_EARLY = new Date('01/16/2019 13:15');
var outOfRangeDate_LATE = new Date('06/16/2019 13:15');

Date.prototype.inRange = function(startDate, endDate){
  var this_ms = this.getTime();
  return ( this_ms >= startDate.getTime() && this_ms <= endDate.getTime() )
}

/* Tests */
console.log('expected: true', 'actual:', checkDateTime.inRange(startDateTime, endDateTime))
console.log('expected: false', 'actual:', outOfRangeDate_EARLY.inRange(startDateTime, endDateTime))
console.log('expected: false', 'actual:', outOfRangeDate_LATE.inRange(startDateTime, endDateTime))

This way, with any date you have var someDate, you can just call someDate.inRange(startDate, endDate). Sometimes, however, messing with the native prototypes can come back to haunt you if not careful. If so, having a separate function as answered by the others is very good.

Lastly, it's very important that the date strings are formatted properly before creating the Date objects, otherwise you'll encounter Invalid Date a lot. I hope this helps.

Check if date/time is BETWEEN two other date/times Javascript

4 Answers4