Re: aria-describedat

Laura Carlson, Thu, 22 Mar 2012 06:30:10 -0500:
> Hi Rich,
> 
> Do you have use cases for making aria-describedat a global attribute?
> If so can you please articulate them here?

Hi Laura. For HTML elements, then it is the HTMLwg which defines which 
ARIA attributes are permitted globally or non-globally:

http://www.w3.org/TR/html5/content-models#wai-aria

Did you mean to ask for justification for why it should be permitted on 
other elements than those of role='img'?

Without HTML5's restrictions, then all ARIA attributes are, in 
princple, 'global', since ARIA is intended for use in any host language 
- html, xhtml, svg, mathml etc. But the HTMLwg has, for instance, not 
declared @aria-label as invalid on <img>, despite the fact that <img> 
already has @alt.
-- 
Leif H Silli