HTML and CSS Reference
In-Depth Information
In fact, the default behavior should be
relevant="additions text"
. This reflects the
most common type of changes.
Discussion
ARIA live regions provide a standardized way to alert assistive technology that a DOM
change has occurred and tell it how to handle the change.
You may also prevent updates from being announced until all of the changes in a live
region finish updating by changing the live region's state. You do this by dynamically
setting the attribute state (
aria-busy="true"
) and then clearing it when the updates are
ready to be announced. This might be useful when multiple updates in a live region
need to be announced together to make sense.
See Also
You can find the WAI-ARIA 1.0 Roles Model at
http://www.w3.org/WAI/PF/aria/
to Use Them at
http://www.w3.org/WAI/PF/aria-practices/#liveprops
, and some ARIA
live regions test examples at
http://test.cita.illinois.edu/aria/live/live1.php
.
The Juicy
Studio Accessibility toolbar for Firefox to examine ARIA live regions is available at