how can i disable date Friday and Saturday

Question

HELLO PROGRAMMER

 

how can i disable date Friday and Saturday using like below

<script type="text/javascript">
var dateToday = new Date();
$(document).ready(function () {
var dp = $("#DateTextbox");
dp.datepicker({
changeMonth: true,
changeYear: true,
minDate: dateToday,
format: "dd.mm.yyyy",
maxDate:(2019,12,3),
language: "tr",
beforeShowDay: function (date) {
var show = true;
if (date.getDay() == 5) show = false
return [show];
}
});
});