- From: David Bolter <david.bolter@utoronto.ca>
- Date: Tue, 09 Dec 2008 15:59:41 -0500
- To: Boris Zbarsky <bzbarsky@MIT.EDU>
- CC: Aaron M Leventhal <aleventh@us.ibm.com>, wai-xtech@w3.org
Boris Zbarsky wrote: > > Aaron M Leventhal wrote: >> Hi Boris, what other standard besides mutation events can fill this >> purpose for page scripts today? > > There could be a custom event for this one situation dispatched by the > UA, for example. What the event would be would need to be > standardized, of course. > > Alternately, page authors could poll the attribute value, without > relying on mutation events at all. > > Even more alternately, authors could ignore the SHOULD-level requirement. > > The point being that none of this actually requires mutation events. > Yes. Hmmm. Since the DOM event model is reentrant and synchronous, this must be quite a performance hit for mutation event compliant browsers. Is there any larger solution to all this? I imagine the mutation event engine is switched on only when needed, via the lazy instantiation pattern already. I could imagine a javascript toolkit providing some nice conveniences (and hiding) the polling method you refer to above... not sure they will though... cheers, David
Received on Tuesday, 9 December 2008 20:59:35 UTC