I have two date:
const a = moment(start)
const b = moment(end)
where for example: a "2022-03-22T09:00:00.000Z" b "2022-03-22T09:30:00.000Z"
Now I'm interested to calculate only difference about time.
So for example if I do moment.duration(b.diff(a))) i obtain PM30
But what I would to obtain is the difference like:
`a "2022-03-22T09:00:00.000Z" b "2022-03-22T09:30:00.000Z"` => b - a = 0.5
`a "2022-03-22T09:00:00.000Z" b "2022-03-22T10:30:00.000Z"` => b - a = 1.5
How can I do?
to get in hours add .asHours()
var a = moment('2022-03-22T09:00:00.000Z');//now
var b = moment('2022-03-22T10:30:00.000Z');
console.log(moment.duration(b.diff(a)).asHours());<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>This can be easily computed using standard JavaScript Dates without incurring the additional overhead in case that's an option to you:
const SEC = 1000, MIN = SEC * 60, HOUR = MIN * 60, DAY = HOUR * 24;
const a = new Date("2022-03-22T09:00:00.000Z");
const b = new Date("2022-03-22T09:30:00.000Z");
const diff = b - a;
console.log("Time difference is:\n" +
`${diff} milliseconds or\n` +
`${diff / SEC} seconds or\n` +
`${diff / MIN} minutes or\n` +
`${diff / HOUR} hours or\n` +
`${diff / DAY} days`);