https://www.hologic.es/themes/custom/hologic/global/js/print.js?tm4wcr

1/**
2 * @file
3 */
4
5 (function($, Drupal, once) {
6
7  'use strict';
8
9  /**
10   * Render Meta tags for print version of the page.
11   */
12  Drupal.behaviors.printHelpers = {
13    attach: function (context, settings) {
14      $(once('html', 'html', context)).each(function() {
15        const title = document.title;
16        const $descriptionEl = $('meta[name="description"]');
17        const $ogTitleEl = $('meta[property="og:title"]');
18        const $ogDescriptionEl = $('meta[property="og:description"]');
19
20        const $metaTags = $('<div/>', {'class': 'meta-tags'});
21        const $metaTagsContent = '<div>Title: ' + title + '</div>' +
22          fetchMetatags($descriptionEl, 'Description') +
23          fetchMetatags($ogTitleEl, 'Open Graph Title')  +
24          fetchMetatags($ogDescriptionEl, 'Open Graph Description')
25        ;
26
27        $metaTags.hide().append($metaTagsContent).prependTo('body');
28      });
29    }
30  };
31
32  function fetchMetatags($el, label) {
33    if (!$el.length > 0) {
34      return '';
35    }
36    const content = $el.attr('content');
37    return `<div>${label}: ${content}</div>`;
38  }
39
40})(jQuery, Drupal, once);