dayjs 在日和小时中的两个日期之间的差异

Question

I wanna calculate the difference between the two dates with dayjs library. it works nice but I need to something different a little bit. For example:

`${dayjs(item).diff(now, 'day') day}`

this function returns '20 days' or whatever. but there are hours that are not calculated inside 'item'. I mean it should be like '20 days 9 hours'.

How can I do this with dayjs?

Thanks for any helps

Answer 1

1. Get the difference in hours
2. Devivde (and round) hours by 24 to get the days
3. Get the remainder, those are the left hours

 const date1 = dayjs('2021-03-13'); const date2 = dayjs(); let hours = date2.diff(date1, 'hours'); const days = Math.floor(hours / 24); hours = hours - (days * 24); console.log('Days: ', days); console.log('Hours: ', hours);

 <script src="https://unpkg.com/dayjs@1.8.21/dayjs.min.js"></script>

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The same logic could be done using seconds, then apply a function to convert those seconds into days/hours/minuts: Convert seconds to HH-MM-SS with JavaScript?

Answer 2

You can obtain the number of days with decimals (adding true as second parameter to diff and work with it:

 const date1 = dayjs('2021-03-13'); const date2 = dayjs(); const diff = date2.diff(date1,'day',true); console.log("obtained", diff); const days = Math.floor(diff); const hours = Math.floor((diff - days) * 24); console.log(`${days} days, ${hours} hours`);

 <script src="https://unpkg.com/dayjs@1.8.21/dayjs.min.js"></script>