Date (Weekdays Only)

Please can someone help me create a “Contact Form 7” date picker that only shows “weekdays”. I’ve tried all solutions online, and none work.

For example I tried….

1. Using “date” that comes with Contact Form 7, but there doesn’t seem to be an argument to hide weekends?
2. Using “Contact Form 7 Datepicker” plugin, with the following code in footer:

$(function() {
 $("#datepicker1").datepicker({
    beforeShowDay: function(date) {
        var day = date.getDay();
        return [(day != 6 && day != 0)];
    }
});
  });

…. but neither approaches seem to work in WordPress?

Thank you for explaining how to create a date picker that only allows WEEKDAYS!