JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.js"></script>
<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/themes/redmond/jquery-ui.css">
 <input id="tarihinput" />

JavaScript

$( '#tarihinput' ).datepicker({
    numberOfMonths: 1,
    beforeShowDay: pazartesileriaktif
});
 
 
function pazartesileriaktif(date) {
    var day = date.getDay();
    return [((day==1 && date.getDate() <8 )), ''];
}