Drupal → Добавить класс элементу пославшему друпаловский ajax запрос

(function ($) {
  var ajaxBeforeSend = Drupal.ajax.prototype.beforeSend;
  Drupal.ajax.prototype.beforeSend = function(xmlhttprequest, options) {
    $(this.element).addClass('ajax-loading');
    ajaxBeforeSend.apply(this, arguments);
  }
 
  var ajaxSuccess= Drupal.ajax.prototype.success;
  Drupal.ajax.prototype.success = function(response, status) {
    $(this.element).removeClass('ajax-loading');
    ajaxSuccess.apply(this, arguments);
  }
})(jQuery);

(function ($, Drupal) {
  var ajaxBeforeSend = Drupal.Ajax.prototype.beforeSend;
  Drupal.Ajax.prototype.beforeSend = function(xmlhttprequest, options) {
    $(this.element).addClass('ajax-loading');
    ajaxBeforeSend.apply(this, arguments);
  };
 
  var ajaxSuccess = Drupal.Ajax.prototype.success;
  Drupal.Ajax.prototype.success = function(response, status) {
    $(this.element).removeClass('ajax-loading');
    ajaxSuccess.apply(this, arguments);
  };
})(jQuery, Drupal);