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Milliseconds

To get the number of milliseconds in a duration, use dayjs.duration().milliseconds().

It will return a number between 0 and 999.

dayjs.duration(500).milliseconds(); // 500
dayjs.duration(1500).milliseconds(); // 500
dayjs.duration(15000).milliseconds(); // 0

If you want the length of the duration in milliseconds, use dayjs.duration().asMilliseconds() instead.

dayjs.duration(500).asMilliseconds(); // 500
dayjs.duration(1500).asMilliseconds(); // 1500
dayjs.duration(15000).asMilliseconds(); // 15000