Question

I want a date after ‘n’ days from a given date in ‘yyyymmdd’ format (output is also in same format).Adding n days should exclude Sundays. Is it possible to do this in javascript?

Here is my code to add n days to a date

    function mydate(dateStr,offset) 
    {
       var ymd = dateStr.match(/^(\d{4})(\d{2})(\d{2})$/);
       if (ymd) 
       {
         var date = new Date(ymd[1], ymd[2] - 1, ymd[3]);
         date.setDate(date.getDate() + offset);
         return $.datepicker.formatDate('yymmdd', date);
       } 
       else 
       {  // parse error
         return null;
       }
    }

for example,

    mydate('19890831',10)

will return

    19890910

but actually what I need is ‘19891012’ because there are 2 Sundays when we add 10 days to the ‘19890831’

Answer 1

Simple solution; you can just loop through the days and skip sundays:

while (offset > 0) {      
  date.setDate(date.getDate() + 1);
  if (date.getDay() != 0) offset--;
}