Exclude holidays between 2 Dates [Might Be Duplicated] : I have searched all over the Internet, and I finally this piece of code in
[Weekend Exclusion][1].

OR 

    function calcBusinessDays(dDate1, dDate2) { // input given as Date objects
        var iWeeks, iDateDiff, iAdjust = 0;
        if (dDate2 < dDate1) return -1; // error code if dates transposed
        var iWeekday1 = dDate1.getDay(); // day of week
        var iWeekday2 = dDate2.getDay();
        iWeekday1 = (iWeekday1 == 0) ? 7 : iWeekday1; // change Sunday from 0 to 7
        iWeekday2 = (iWeekday2 == 0) ? 7 : iWeekday2;
        if ((iWeekday1 > 5) && (iWeekday2 > 5)) iAdjust = 1; // adjustment if both days on weekend
        iWeekday1 = (iWeekday1 > 5) ? 5 : iWeekday1; // only count weekdays
        iWeekday2 = (iWeekday2 > 5) ? 5 : iWeekday2;
    
        // calculate differnece in weeks (1000mS * 60sec * 60min * 24hrs * 7 days = 604800000)
        iWeeks = Math.floor((dDate2.getTime() - dDate1.getTime()) / 604800000)
    
        if (iWeekday1 <= iWeekday2) {
          iDateDiff = (iWeeks * 5) + (iWeekday2 - iWeekday1)
        } else {
          iDateDiff = ((iWeeks + 1) * 5) - (iWeekday1 - iWeekday2)
        }
    
        iDateDiff -= iAdjust // take into account both days on weekend
    
        return (iDateDiff + 1); // add 1 because dates are inclusive
      }

I have no idea how to add codes to exclude the holiday.  I understand I have to create an array to store the holidays, but after that I stuck at the point. I need your help, much appreciated.

  [1]: https://stackoverflow.com/questions/3464268/find-day-difference-between-two-dates-excluding-weekend-days?noredirect=1&lq=1