javascript - How to correctly calculate the number of minutes from a certain moment? - Stack Overflow

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There is a start date for the process in string form:

'2020-03-02 06:49:05'

And the process pletion date:

'2020-03-02 07:05:02'

Question:
What is the most correct way from the point of view of the approach - to calculate the difference (in minutes) between the start and finish of the process? (if there are any built-in methods for this in vue.js ornuxt.js, it will be very interesting to learn about them as well.)

There is a start date for the process in string form:

'2020-03-02 06:49:05'

And the process pletion date:

'2020-03-02 07:05:02'

Question:
What is the most correct way from the point of view of the approach - to calculate the difference (in minutes) between the start and finish of the process? (if there are any built-in methods for this in vue.js ornuxt.js, it will be very interesting to learn about them as well.)

• javascript
• vue.js
• nuxt.js

Share Improve this question Follow edited Mar 2, 2020 at 6:19 Mikhail Krivosheev asked Mar 2, 2020 at 6:15 Mikhail KrivosheevMikhail Krivosheev 56944 silver badges2121 bronze badges 2

• 1 how about using some library like momentjs[momentjs./docs/] – adil hussain Commented Mar 2, 2020 at 6:18
• Yes. The best method is to not do the calculation yourself and use a library. And also to think next time that this is such a mon problem that this question might have been asked 1000 times on stackoverflow. So let me first check and then ask this question. – vishal Commented Mar 2, 2020 at 6:43

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 6

I think the best way would be to use Javascript Date object,

d1 = '2020-03-02 06:49:05'
d2 = '2020-03-02 07:05:02'

diff_in_millis = Math.abs(new Date(d1) - new Date(d2))
diff_in_minutes = diff/60000

I suggest using momentjs, you can do something like this:

var duration = moment.duration(endTime.diff(startTime));
var minutes = duration.minutes();

More about duration in momentjs can be found here

Create the date from the string using Date.parse(). It return the date in milliseconds, get the difference and convert that to Minutes.

See snippet below.

const startTime= Date.parse('2020-03-02 06:49:05')
const endTime = Date.parse('2020-03-02 07:05:02')

// Difference in Minutes
const durationInMin= (endTime-startTime)/60000;

console.log({ startTime, endTime, durationInMin })

alert(`Process took: ${durationInMin} minutes`)

---

Note: For human readable dates, I have found date-fns to be the most helpful. Given its lightweight pared to momentjs. And you could plete the same with the following.

import { differenceInMinutes } from 'date-fns';

const startDate = '2020-03-02 06:49:05';
const endDate = '2020-03-02 07:05:02';
const durationInMin = differenceInMinutes( new Date(endDate), new Date(startDate));

console.log(`Duration:  ${durationInMin} minutes`);

At the cost of another dependence to the project of course, but if you are handling lots of human readable dates, it's worth it.

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