Calculate Time Difference Between Two Date in Hh:Mm:Ss JavaScript

calculate time difference between two date in HH:MM:SS javascript

To convert H:M:S to seconds, you can use a simple function like:

// Convert H:M:S to seconds
// Seconds are optional (i.e. n:n is treated as h:s)
function hmsToSeconds(s) {
  var b = s.split(':');
  return b[0]*3600 + b[1]*60 + (+b[2] || 0);
}

Then to convert seconds back to HMS:

// Convert seconds to hh:mm:ss
// Allow for -ve time values
function secondsToHMS(secs) {
  function z(n){return (n<10?'0':'') + n;}
  var sign = secs < 0? '-':'';
  secs = Math.abs(secs);
  return sign + z(secs/3600 |0) + ':' + z((secs%3600) / 60 |0) + ':' + z(secs%60);
}

var a = '01:43:28';
var b = '12:22:46';

console.log(secondsToHMS(hmsToSeconds(a) - hmsToSeconds(b)));  // -10:39:18
console.log(secondsToHMS(hmsToSeconds(b) - hmsToSeconds(a)));  //  10:39:18

You may want to abbreviate the function names to say:

toHMS(toSec(a) - toSec(b));  // -10:39:18

Note that this doesn't cover where the time may cross a daylight saving boundary. For that you need fully qualified dates that include the year, month and day. Use the values to create date objects, find the difference, convert to seconds and use the secondsToHMS function.

Edit

The question title mentions dates, however the content only seems to mention strings of hours, minutes and seconds.

If you have Date objects, you can get the difference between them in milliseconds using:

var diffMilliseconds = date0 - date1;

and convert to seconds:

var diffSeconds = diffMilliseconds / 1000;

and present as HH:MM:SS using the secondsToHMS function above:

secondsToHMS((date0 - date1) / 1000);

e.g.

var d0 = new Date(2014,10,10,1,43,28);
var d1 = new Date(2014,10,10,12,22,46);

console.log( secondsToHMS((d0 - d1) / 1000));  // -10:39:18

Hour difference between two times(HH:MM:SS a)in momentjs

I got the hours by using this code

endTime.diff(startTime, 'hours')

i got the minutes by using this below code

var mins = moment.utc(moment(endTime, "HH:mm:ss").diff(moment(startTime, "HH:mm:ss"))).format("mm")

$scope.UpdateTimeSheet = function (rowEntity) {   
  if (rowEntity.StartTime.toString().length != 11) {
    rowEntity.StartTime = moment(rowEntity.StartTime).format("hh:mm:ss a");
  }

  if (rowEntity.EndTime.toString().length != 11) {
    rowEntity.EndTime = moment(rowEntity.EndTime).format("hh:mm:ss a");
  }

  var startTime = moment(rowEntity.StartTime, "hh:mm:ss a");
  var endTime = moment(rowEntity.EndTime, "hh:mm:ss a");

  var mins = moment.utc(moment(endTime, "HH:mm:ss").diff(moment(startTime, "HH:mm:ss"))).format("mm")

  rowEntity.TotalHours = endTime.diff(startTime, 'hours') + " Hrs and " + mins + " Mns";

}

How to Calculate difference between two dates with yyyy'-‘MM'-‘dd'T'HH':'mm':'ss.fffffff date-time format

const date1 = new Date("2021-02-23T08:31:37.1410141"); 
const date2 = new Date(); 
const diffTime = date2.getTime() - date1.getTime(); 
const diffDays = Math.floor(Math.abs(diffTime / (1000 * 3600 * 24)));

get the time difference between two times in format hh:mm:ss

You can split them with : and take difference. And again join them with :

    var start = '01:00:24';var end = '01:00:34';var diff = start.split(':').map((item,index) => end.split(':')[index] - item).join(':')console.log(diff)

function timeFunction() {
  const getSeconds = s => s.split(":").reduce((acc, curr) => acc * 60 + +curr, 0);
  var seconds1 = getSeconds(document.getElementById("timeOne").value);
  var seconds2 = getSeconds(document.getElementById("timeTwo").value);

  var res = Math.abs(seconds2 - seconds1);

  var hours = Math.floor(res / 3600);

  var minutes = Math.floor(res % 3600 / 60);

  var seconds = res % 60;
  document.getElementById("timeDifference").innerHTML = hours + ":" + minutes + ":" + seconds;
}

<input type="time" id="timeOne" name="timeOne" value="00:00:01" step="1" onchange="timeFunction()">
<input type="time" id="timeTwo" name="timeTwo" value="00:00:01" step="1" onchange="timeFunction()">
<b>Time Difference: </b>
<p id="timeDifference">--:--:--</p>
<input type="hidden" id="timeDiff" name="timeDiff">

var startDate = new Date('2016-01-01 00:00:00');
var endDate = new Date('2016-01-02 23:15:00');
var time = endDate - startDate;
console.log(time/1000/60/60%24); //23.25

var t1 = moment('05:34:01', "hh:mm:ss");
var t2 = moment('20:44:44', "hh:mm:ss");
var t3 = moment(t2.diff(t1)).format("hh:mm:ss");

var moment = require('moment');

var startDate = new Date();
// Do your operations
var endDate   = new Date();
var seconds = (endDate.getTime() - startDate.getTime()) / 1000;