How can i use custom ajax command using #ajax api , i have the following code working well

        $ajax_response = new AjaxResponse();                
        $ajax_response->addCommand(new InvokeCommand('#edit-event-trigger', 'attr', array('disabled',true)));
        $ajax_response->addCommand(new InvokeCommand('#edit-event-trigger', 'removeAttr', array('placeholder')));
        $ajax_response->addCommand(new InvokeCommand('#edit-event-trigger', 'css',array("background-color", "")));
        //Return the AjaxResponse Object.
        return $ajax_response;

But suppose if i want to focus() or hide() the edit-event-trigger element , how could i do that ?

  • 1
    did you try 'focus' and 'hide'?
    – 4uk4
    Commented Aug 16, 2016 at 13:18
  • tried like this : $ajax_response->addCommand(new InvokeCommand('#edit-event-trigger', 'focus'));
    – KTM
    Commented Aug 16, 2016 at 13:35
  • This is ok, did you check for php errors, could be a missing use statement?
    – 4uk4
    Commented Aug 16, 2016 at 15:42
  • yes i checked , am using the following ajax classes : use Drupal\Core\Ajax\ChangedCommand; use Drupal\Core\Ajax\CssCommand; use Drupal\Core\Ajax\HtmlCommand; use Drupal\Core\Ajax\AjaxResponse; use Drupal\Core\Ajax\InvokeCommand;
    – KTM
    Commented Aug 16, 2016 at 15:43
  • 1
    I think there is nothing wrong with your ajax commands. They should work.
    – 4uk4
    Commented Aug 16, 2016 at 15:52

1 Answer 1


These are some examples you can try:

$response->addCommand(new \Drupal\Core\Ajax\InvokeCommand('.message', 'addClass', array('show')));
$response->addCommand(new \Drupal\Core\Ajax\InvokeCommand('.message', 'removeClass', array('show')));
$response->addCommand(new \Drupal\Core\Ajax\InvokeCommand('.message', 'attr', array('value', '123')));
$response->addCommand(new \Drupal\Core\Ajax\HtmlCommand('.message', "Show this text"));
$response->addCommand(new \Drupal\Core\Ajax\InvokeCommand('.message', 'css', array('background', '#dff0d8')));


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