Get hours difference between two dates in Moment J

Question

I'm able to get the difference between two dates using MomentJs as follows:

moment(end.diff(startTime)).format("m[m] s[s]")

However, I also want to display the hour when applicable (only when >= 60 minutes have passed).

However, when I try to retrieve the duration hours using the following:

var duration = moment.duration(end.diff(startTime));
var hours = duration.hours();

it is returning the current hour and not the number of hours between the two dates.

How do I get the difference in hours between two Moments?

Answer 1

If you want total minutes between two dates in day wise than may below code will help full to you Start Date : 2018-05-04 02:08:05 , End Date : 2018-05-14 09:04:07...

function countDaysAndTimes(startDate,endDate){
return new Promise(function (resolve, reject) {
var dayObj = new Object;
var finalArray = new Array;

var datetime1 = moment(startDate);
var datetime2 = moment(endDate);
if(datetime1.format('D') != datetime2.format('D') || datetime1.format('M') != datetime2.format('M') ||  datetime1.format('YYYY') != datetime2.format('YYYY')){
  var onlyDate1 = startDate.split(" ");
  var onlyDate2 = endDate.split(" ");
  var totalDays = moment(onlyDate2[0]).diff(moment(onlyDate1[0]), 'days')

  // First Day Entry
  dayObj.startDate = startDate;
  dayObj.endDate = moment(onlyDate1[0]).add(1, 'day').format('YYYY-MM-DD')+" 00:00:00";
  dayObj.minutes = moment(dayObj.endDate).diff(moment(dayObj.startDate), 'minutes');
  finalArray.push(dayObj);

  // Between Days Entry
  var i = 1;
  if(totalDays > 1){
    for(i=1; i<totalDays; i++){
      var dayObj1 = new Object;
      dayObj1.startDate = moment(onlyDate1[0]).add(i, 'day').format('YYYY-MM-DD')+" 00:00:00";
      dayObj1.endDate = moment(onlyDate1[0]).add(i+1, 'day').format('YYYY-MM-DD')+" 00:00:00";
      dayObj1.minutes = moment(dayObj1.endDate).diff(moment(dayObj1.startDate), 'minutes');
      finalArray.push(dayObj1);
    }
  }

  // Last Day Entry
  var dayObj2 = new Object;
  dayObj2.startDate = moment(onlyDate1[0]).add(i, 'day').format('YYYY-MM-DD')+" 00:00:00";
  dayObj2.endDate = endDate ;
  dayObj2.minutes = moment(dayObj2.endDate).diff(moment(dayObj2.startDate), 'minutes');
  finalArray.push(dayObj2);

}
else{
  dayObj.startDate = startDate;
  dayObj.endDate = endDate;
  dayObj.minutes = datetime2.diff(datetime1, 'minutes');
  finalArray.push(dayObj);
}
console.log(JSON.stringify(finalArray));
// console.table(finalArray);
resolve(finalArray);
});
}

Output

 [
  {
  "startDate":"2018-05-04 02:08:05",
  "endDate":"2018-05-05 00:00:00",
  "minutes":1311
  },
  {
  "startDate":"2018-05-05 00:00:00",
  "endDate":"2018-05-06 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-06 00:00:00",
  "endDate":"2018-05-07 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-07 00:00:00",
  "endDate":"2018-05-08 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-08 00:00:00",
  "endDate":"2018-05-09 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-09 00:00:00",
  "endDate":"2018-05-10 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-10 00:00:00",
  "endDate":"2018-05-11 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-11 00:00:00",
  "endDate":"2018-05-12 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-12 00:00:00",
  "endDate":"2018-05-13 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-13 00:00:00",
  "endDate":"2018-05-14 00:00:00",
  "minutes":1440
  },
  {
  "startDate":"2018-05-14 00:00:00",
  "endDate":"2018-05-14 09:04:07",
  "minutes":544
  }
 ]

Answer 2

var __startTime = moment("2016-06-06T09:00").format();
var __endTime = moment("2016-06-06T21:00").format();

var __duration = moment.duration(moment(__endTime).diff(__startTime));
var __hours = __duration.asHours();
console.log(__hours);