Adding options in choice fields dynamically in Nintex forms 2013

Another easy way to populate the choices in a choice control is to add the value from an item property. So you could use calculated columns (10 in this case to create each of your values and then add these column references in your choice control options. Or alternatively use workflow to populate the 10 choices into a single multi line text column and add that single column reference to your choice control.

Just a no code alternative for you. I accept JS will be a cleaner solution but I always try and avoid code where I can so my clients can support it easier after I leave.

i developed a solution which populates the dates as needed. But the same is not submitting for some reasons (An unexpected error has occured). ‌ ‌ ‌ 

NWF$(document).ready(function () {
var curr = new Date;
var first = curr.getDate() - curr.getDay();
var last = first + 6;
var lastDay = new Date(curr.setDate(last));
//to log current week end date in mm/dd/yyyy format
var lastDayDate = lastDay.getDate();
var lastDayMonth = lastDay.getMonth() + 1;
var lastDayYear = lastDay.getFullYear();
var currentYear = lastDay.getFullYear();
//get previous 10 weekend dates and log in mm/dd/yyyy format
for(var i=0; i<10; i++)
{
var prevWeekend = lastDay.getDate()-7;
lastDay = new Date(curr.setDate(prevWeekend));
lastDayDate = lastDay.getDate();
lastDayMonth = lastDay.getMonth() + 1;
lastDayYear = lastDay.getFullYear();
lastDayFormatted = (lastDayMonth) + '/' + lastDayDate + '/' + lastDayYear;
// console.log(lastDayFormatted);
NWF$("#"+ddlDates).append ("<option value="+lastDayFormatted+">" + lastDayFormatted + "</option>");
}
// to get next week end dates for current year
curr = new Date;
lastDay = new Date(curr.setDate(last));
lastDayDate = lastDay.getDate();
lastDayMonth = lastDay.getMonth() + 1;
lastDayYear = lastDay.getFullYear();
lastDayFormatted = lastDayMonth + '/' + lastDayDate + '/' + lastDayYear;
// console.log(lastDayFormatted);
NWF$("#"+ddlDates).append ("<option="+lastDayFormatted+">" + lastDayFormatted + "</option>");
for(i=0; i<53; i++)
{
var nextWeekend = lastDay.getDate()+7;
lastDay = new Date(curr.setDate(nextWeekend));
lastDayDate = lastDay.getDate();
lastDayMonth = lastDay.getMonth() + 1;
lastDayYear = lastDay.getFullYear();
if (currentYear==lastDayYear)
{
lastDayFormatted = lastDayMonth + '/' + lastDayDate + '/' + lastDayYear;
// console.log(lastDayFormatted);
NWF$("#"+ddlDates).append ("<option="+lastDayFormatted+">" + lastDayFormatted + "</option>");
}
else
{
break;
}
}
});

wouldn't it be easier to use regular date picker and configure it to allow select just Saturdays within range of  -10weeks and +1week?

it's quite easy, some 5 line of code

NWF.FormFiller.Events.RegisterAfterReady(function (){
   NWF$('#' + dateCtrl).datepicker('option',{
       beforeShowDay: function(currDate){
           if(currDate.getDay() == 6 )
               return [true,""];
           return [false,""];
       },
       minDate: -10*7,
       maxDate: +2*7,
   })
})‍‍‍‍‍‍‍‍‍‍‍

I got it, after some research

To show Monday to Friday and starting from today's date:

NWF.FormFiller.Events.RegisterAfterReady(function (){
   NWF$('#' + dateCtrl).datepicker('option',{
  minDate: 0,  
  maxDate: '0+30',  
  beforeShowDay: NWF$.datepicker.noWeekends,  
  onSelect: function(datestr){  
  startdate = $(this).datepicker('getDate');  
 }});  
});

I have limited to show next 30 working days by maxDate
Otherwise you can say maxDate: '+1y' to show 1 year worth of dates.

Hint: the 30 days are including the weekends lol

So if you want 30 working days then you need to add + weekend days.