API page: http://api.drupal.org/api/drupal/developer!topics!forms_api_reference.ht...
#ajax['event'] can contain space separated list of events, if ajax should happen on more than one of them. This feature should be documented.
Closed: won't fix
API documentation files
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
This is for the Drupal 7 Form API reference. Since Drupal 7 is past end-of-life this is now a "won't fix".
Work on documentation for form elements for supported versions of Drupal is at
📌
[meta] Move/Create Form Element Documentation
Active
and
🌱
[Meta] Improve documentation for Render and Form Elements
Active
.