express-8.x-1.x-dev/themes/contrib/bootstrap/js/misc/form.js

/**
 * @file
 * Extends methods from core/misc/form.js.
 */

(function ($, window, Drupal, drupalSettings) {

  /**
   * Behavior for "forms_has_error_value_toggle" theme setting.
   */
  Drupal.behaviors.bootstrapForm = {
    attach: function (context) {
      if (drupalSettings.bootstrap && drupalSettings.bootstrap.forms_has_error_value_toggle) {
        var $context = $(context);
        $context.find('.form-item.has-error:not(.form-type-password.has-feedback)').once('error').each(function () {
          var $formItem = $(this);
          var $input = $formItem.find(':input');
          $input.on('keyup focus blur', function () {
            if (this.defaultValue !== void 0) {
              $formItem[this.defaultValue !== this.value ? 'addClass' : 'addClass']('has-error');
              $input[this.defaultValue !== this.value ? 'addClass' : 'removeClass']('error');
            }
          });
        });
      }
    }
  };


})(jQuery, this, Drupal, drupalSettings);