[whatwg] .tags on HTMLCollections

[Maciej Stachowiak]

On Jul 13, 2009, at 11:55 PM, Boris Zbarsky wrote:

> Ian just pointed out to me that his current draft requires  
> HTMLCollections to implement a tags() method (which seems to do a  
> filter by tagName on the contents of the collection).
>
> As far as I can tell, IE, Webkit, and Opera implement this; Gecko  
> does not.  I was wondering whether any of the Webkit or Opera folks  
> could comment on _why_ they implement this?  I haven't seen any uses  
> of this in the wild (outside document.all.tags, but document.all  
> doesn't behave like a normal HTMLCollection in all sorts of other  
> ways either).
>
> I'd rather be specifying (and implementing) a smaller DOM API, if  
> that's all that's needed for actual web compat....

Support for HTMLCollection.tags() in WebKit predates the fork from  
KHTML. So we don't know why it was originally added.

Regards,
Maciej