I need in jQuery/Javascript to display a date (comming from a DatePicker) with more information and depending on language:

The Date I get from the DatePicker displays as : 17-06-2022

I need it to display as (In Danish)  : Fredag d. 17 Juni 2022
                        (In English) : Friday 17th June 2022

My code:

$( document ).ready(function() {
  $('#BtnProceed').click(function() {
        var date = document.getElementById("ConfirmEndDateHolder").value = EndCalendar.getFormatedDate();
        $("#ConfirmEndDateHolder").text(date);
  });    
});

Can someone help me achive this?