https://crp.bpost.be/modules/contrib/webform/js/webform.form.auto_focus.js?tkgxpq

1/**
2 * @file
3 * JavaScript to autofocus first input.
4 */
5
6(function ($, Drupal) {
7  /**
8   * Autofocus first input.
9   *
10   * @type {Drupal~behavior}
11   *
12   * @prop {Drupal~behaviorAttach} attach
13   *   Attaches the behavior for the webform autofocusing.
14   */
15  Drupal.behaviors.webformAutofocus = {
16    attach(context) {
17      $(context).find('.js-webform-autofocus :input:visible:enabled:first')
18        .trigger('focus');
19    }
20  };
21
22})(jQuery, Drupal);