[whatwg] Fallback behavior
mart at degeneration.co.uk
Tue Mar 13 00:59:40 PDT 2007
Maciej Stachowiak wrote:
> As far as I can tell, the current spec does not adequately define how
> fallback behavior works. Specifically, what should be done with fallback
> content when not falling back?
> Presumably it should be parsed into the DOM, but should not render -
> that's the de facto behavior.
<object id="movie" data="movie.ogg">
<object id="movie" data="movie.mov">
<object id="movie" data="movie.asf">
<p>Blah blah movie alternative text...</p>
If these things remain in the DOM, authors will presumably need to give
them all distinct "id" values.
Now if I want to access these things from script, such as to provide an
alternative player UI, I need to somehow determine which one is actually
being used in order to target it. If they're all in the DOM, I can't
just rely on getElementById returning null for the unused cases.
What's the solution in this case?
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