https://greece.fage/modules/contrib/webform/js/webform.element.select.js?tjx8qa

1/**
2 * @file
3 * JavaScript behaviors for select menu.
4 */
5
6(function ($, Drupal, once) {
7
8  /**
9   * Disable select menu options using JavaScript.
10   *
11   * @type {Drupal~behavior}
12   */
13  Drupal.behaviors.webformSelectOptionsDisabled = {
14    attach: function (context) {
15      $(once('webform-select-options-disabled', 'select[data-webform-select-options-disabled]', context)).each(function () {
16        var $select = $(this);
17        var disabled = $select.attr('data-webform-select-options-disabled').split(/\s*,\s*/);
18        $select.find('option').filter(function isDisabled() {
19          return ($.inArray(this.value, disabled) !== -1);
20        }).attr('disabled', 'disabled');
21      });
22    }
23  };
24
25})(jQuery, Drupal, once);