HTMLUnknownElement

Both Firefox and Opera currently give any HTML element they haven't 
heard of the interface HTMLUnknownElement, which to my knowledge is 
identical to HTMLElement in all but name.

We are unlikely to remove support for it as sites (most notably Yahoo! 
Mail Beta) rely upon its existence.

Anyone from Mozilla able to comment on any sort of intention from their 
side?

If neither of us are going to remove it, we probably ought to add it to 
the spec, though I'm not sure quite how we'd want to word it, as to 
allow future standards (adding, for example, a "kitchensink" element) to 
extend HTML 5 with known elements.

-- 
Geoffrey Sneddon — Opera Software ASA
<http://gsnedders.com/>
<http://www.opera.com/>

Received on Monday, 20 July 2009 10:52:58 UTC