bguiz bguiz - 2 months ago 55
Javascript Question

Minutes since midnight in Momentjs

In pure JS, this would be how.

How can I find out the number of minutes since midnight for a given

moment
object (without extracting to
Date
)?


  • Must take into account DSTs

  • Minutes should be rounded

  • Must work with local time (not convert to UTC)


Answer
// Your moment
var mmt = moment();

// Your moment at midnight
var mmtMidnight = mmt.clone().startOf('day');

// Difference in minutes
var diffMinutes = mmt.diff(mmtMidnight, 'minutes');

By default, moment#diff will return number rounded down. If you want the floating point number, pass true as the third argument. Before 2.0.0, moment#diff returned rounded number, not a rounded down number.

Consider this pseudocode because I haven't test to see if the difference takes into account DST.

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