'date',
'#ajax' => [
'callback' => [$callback_object, 'dateCallback'],
],
'#suffix' => 'No date yet selected
',
];
$form['datetime'] = [
'#type' => 'datetime',
'#ajax' => [
'callback' => [$callback_object, 'datetimeCallback'],
'wrapper' => 'ajax_datetime_value',
],
];
$form['datetime_result'] = [
'#type' => 'markup',
'#markup' => 'No datetime selected.
',
];
return $form;
}
/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state) {}
}