multiDatesPicker - Only allow one day every 2 weeks from Current Day

Question

I have the mulitdatespicker, and I need to disable ALL dates except those that are every 2 weeks from the "defaultDate".

So if the current day is set to thursday 6th May, I need to disable all days before it, then all the days up to Thurs 20th May (2 weeks from the 6th). Then disable 2 weeks again up to 3rd June... (2 weeks from the 20th) etc.

So the only dates selectable are every 2 weeks from the defaultDate.

jQuery('.multidatepicker').multiDatesPicker({
    dateFormat: "d M yy", 
    defaultDate: '6 May 2021',
    maxDate: 72,
    minDate: new Date(),
    addDisabledDates: ??? //Do I add something here?
}); 

Answer 1

you could do that: push disabled dates in an array

var defaultDate = new Date("6 May 2021");
var datedeb = new Date(defaultDate);
var maxDate = 72;

var arDate=[];
var enable = false;

for(var i = 1; i <maxDate; i++)
{
    enable = i % 14 == 0;
    var newdate = new Date(datedeb.setDate(datedeb.getDate() + 1));
    if(!enable)arDate.push(newdate);  

}

jQuery('.multidatepicker').multiDatesPicker({
    dateFormat: "d M yy", 
    defaultDate: defaultDate,
    maxDate: maxDate,
    minDate: defaultDate,
 addDisabledDates: arDate
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<link href="https://code.jquery.com/ui/1.12.1/themes/pepper-grinder/jquery-ui.css" rel="stylesheet"/>

<script src="https://cdn.rawgit.com/dubrox/Multiple-Dates-Picker-for-jQuery-UI/master/jquery-ui.multidatespicker.js"></script>
<link href="https://cdn.rawgit.com/dubrox/Multiple-Dates-Picker-for-jQuery-UI/master/jquery-ui.multidatespicker.css" rel="stylesheet"/>
<div class ="multidatepicker" id="mdp-demo"></div>