Difference between two time using dayjs

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I have two inputs of time and I want to get the difference/time-interval between these two using dayjs

fromtime = '13:00'
totime = '17:00'

So the output for the above two should be 4:00 hours

I tried

console.log(
          dayjs(fromtime).diff(dayjs(totime), "hours")
        );

But am not getting the expected output.


Dayjs expects a Date in a certain format (dayjs parse string) not just a time. However you can set the hour (dayjs set hour) without setting a certain date (dayjs parse now):

var fromtime = dayjs().hour(13)
var totime = dayjs().hour(17)

console.log(totime.diff(fromtime, "hours"));
<script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.8.20/dayjs.min.js"></script>

Difference between two time using dayjs, Difference. This indicates the difference between two date-time in the specified unit. To get the difference in milliseconds, use� The Time Duration Calculator will calculate the time that has elapsed/difference between two dates with time.


I found the solution to this.

const fromtime = '11:20'
const totime = '12:30'

const ft = dayjs(`2000-01-01 ${fromtime}`);
const tt = dayjs(`2000-01-01 ${totime}`);
const mins = tt.diff(ft, "minutes", true);
const totalHours = parseInt(mins / 60);
const totalMins = dayjs().minute(mins).$m

This will give the output as totalHours = 1 and totalMins = 10. Hope this help someone.

Difference � Day.js, Computing difference between two dates, which one was subtracted 1000 days from, returns 999 days, if the date is on the boundary of� I know I can do anything and some more envolving Dates with momentjs. But embarrassingly, I'm having a hard time trying to do something that seems simple: geting the difference between 2 times. Example: var now = "04/09/2013 15:00:00"; var then = "04/09/2013 14:20:30"; //expected result: "00:39:30" what I tried:


fromtime = '13:00'
totime = '17:00'

These are currently strings and you need to convert it into integers.

console.log(parseInt(fromtime) - parseInt(totime)) //4

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Compute a human-readable difference between two date-times , Having been allocated a task to manipulate and display dates, my Here I would like to describe how to use Day.js, what is the benefit of using� Use the DATEDIF function when you want to calculate the difference between two dates. First put a start date in a cell, and an end date in another. Then type a formula like one of the following. Warning: If the Start_date is greater than the End_date, the result will be #NUM!.


Why you should choose Day.js instead of Moment.js?, Solved: How do I calculate the difference between two dates in Power Query M code (not DAX)? I'm looking for the number of days.


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