JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="datepickerctrl" />

JavaScript

var disableddates = ['2015-12-01', '2015-12-02', '2015-12-03'];

function DisableSpecificDates(date) {
  var datestring = jQuery.datepicker.formatDate('yy-mm-dd', date);
  var disableDate = 0;
  if ($.inArray(datestring, disableddates) != -1) {
    disableDate++;
  }
  if (date.getDay() == 0) {
        disableDate++;
  }
  if(disableDate > 0)
    return [false];
  else
    return [true];
}
$(document).ready(function () {
  $('#datepickerctrl').datepicker({
    beforeShowDay: DisableSpecificDates
  });
});