https://www.digibook.education/sites/all/modules/h5p/scripts/h5p-integration.js?scuwqp

1/* global Drupal */
2(function ($) { // Avoid leaking variables
3
4  /**
5   * Add CSRF token to link
6   *
7   * @param {HTMLAnchorElement} button Link
8   * @param {string} token Token
9   */
10  const addCSRFToken = function (button, token) {
11    const form = document.createElement('form');
12    form.action = button.href;
13    form.method = 'POST';
14    form.classList.add('h5p-hidden-form');
15
16    const inputToken = document.createElement('input');
17    inputToken.name = '_token';
18    inputToken.type = 'hidden';
19    inputToken.value = token;
20    form.appendChild(inputToken);
21
22    button.parentNode.appendChild(form);
23
24    button.href = '#' + button.href.match(/([^\/])+$/i)[0];
25    button.addEventListener('click', function (e) {
26      form.submit();
27      e.preventDefault();
28    });
29  }
30
31  Drupal.behaviors.h5pContentHub = {
32    attach: function (context, settings) {
33      if (typeof context.getElementsByClassName === "function") {
34        const buttons = context.getElementsByClassName('h5p-content-hub-button');
35        for (let i = 0; i < buttons.length; i++) {
36          if (buttons[i].classList.contains('processed')) {
37            continue; // Skip
38          }
39          buttons[i].classList.add('processed');
40          addCSRFToken(buttons[i], settings.h5pContentHub.token);
41        }
42      }
43    }
44  };
45
46})(jQuery);