[whatwg] WebIDL vs HTML5 storage changes

Robert O'Callahan robert at ocallahan.org
Tue May 20 15:58:23 PDT 2008

On Wed, May 21, 2008 at 10:34 AM, Maciej Stachowiak <mjs at apple.com> wrote:

> style.opacity = ... certainly triggers DOM API even if opacity was not
> previously set on that style.

The property was always there, though, from the JS point of view.

And there is even a plausible mapping for delete (style.removeProperty).
> It's not completely open-ended but you can certainly have properties added
> to and removed from a style declaration.

style.removeProperty does not remove the JS property, so from the JS point
of view it's a misnomer.

Ultimately the conclusion I question is that having obj.foo and obj.foo =
> ... work, but not delete obj.foo, will create confusion or is somehow
> illogical. I don't believe it will create confusion, and I think style is a
> relevant example of a case where it has not.

FWIW, I see "style.opacity = '';" far more often than removeProperty. I
don't think authors don't think of 'style' as a container to which they can
add and remove arbitrary properties, so I continue to maintain it's not
relevant to their expectations for storage.

I don't care all that much. But since it's convenience with some use, and
we've already implemented it and so has IE, I think we'd want a pretty
strong argument to remove it.

"He was pierced for our transgressions, he was crushed for our iniquities;
the punishment that brought us peace was upon him, and by his wounds we are
healed. We all, like sheep, have gone astray, each of us has turned to his
own way; and the LORD has laid on him the iniquity of us all." [Isaiah
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