https://www.qooq.com/sites/all/modules/contrib/page_load_progress/js/page_load_progress.js?qmgln2

1/**
2 * @file
3 * Page Load Progress allows you to set a screen lock showing a spinner when the
4 * user clicks on an element that triggers a time consuming task.
5 */
6
7(function($){
8  Drupal.behaviors.page_load_progress = {
9    attach: function(context, settings) {
10      var delay = Number(Drupal.settings.page_load_progress.delay);
11      var exit_elements = String(Drupal.settings.page_load_progress.elements).split(',');
12      var screen_lock = '<div class="page-load-progress-lock-screen hidden_loadprogress">\n\
13                          <div class="page-load-progress-spinner"></div>\n\
14                         </div>';
15      var body = $('body', context);
16      for (i in exit_elements) {
17        $(exit_elements[i]).click(function() {
18          setTimeout(lockScreen, delay);
19        });
20      }
21      var lockScreen = function () {
22        body.append(screen_lock);
23        body.css({
24          'overflow' : 'hidden'
25        });
26        $('.page-load-progress-lock-screen').fadeIn('slow');
27      }
28    }
29  };
30})(jQuery);