How to calculate Number of 'Working days' between two dates in Javascript using moment.js?

Question

How to calculate the number of working days between two dates in JavaScript using moment.js. I have a working formula that calculate these days, but the formula does not sat

Answer 1

you can try this(without loop):

  function getBusinessDays(endDate, startDate) {
    var lastDay = moment(endDate);
    var firstDay = moment(startDate);
    let calcBusinessDays = 1 + (lastDay.diff(firstDay, 'days') * 5 -
      (firstDay.day() - lastDay.day()) * 2) / 7;

    if (lastDay.day() == 6) calcBusinessDays--;//SAT
    if (firstDay.day() == 0) calcBusinessDays--;//SUN

    return calcBusinessDays;
  }

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