W3C home > Mailing lists > Public > www-validator@w3.org > December 2012

Re: Attribute srcset not allowed on element img at this point.

From: Ed Palmer <ed.palmer@gmail.com>
Date: Wed, 19 Dec 2012 11:59:36 -0500
Message-ID: <CAJ1o0bBNU-Ff3tKurg=gfR=3DZqF+ZJ1YHa+HY+6FXDhX+M49A@mail.gmail.com>
To: "Michael[tm] Smith" <mike@w3.org>
Cc: www-validator@w3.org
>there are no browsers that support it yet

Per the change log that added this to MediaWiki:

"Confirmed basic images and thumbs in wikitext appear to work in Safari 6,
Chrome 21, Firefox 18 nightly on MacBook Pro Retina display, and IE 10 in
Windows 8 at 150% zoom, 200% zoom, and 140% and 180%-ratio Metro tablet
sizes."

https://gerrit.wikimedia.org/r/#/c/24115/

--Ed


On Tue, Dec 18, 2012 at 3:33 AM, Michael[tm] Smith <mike@w3.org> wrote:

> Ed Palmer <ed.palmer@gmail.com>, 2012-12-17 08:26 -0500:
>
> > Sample document:
> > http://en.wikipedia.org/wiki/User:Gadget850/srcset
> >
> > When validating an English Wikipedia page, the error "Attribute srcset
> not
> > allowed on element img at this point" is displayed. This is due to the
> > srcset attribute being used to generate alternate images.
> >
> > Srcset is not in the live HTML5 specification:
> >
> http://dev.w3.org/html5/spec-author-view/the-img-element.html#the-img-element
> >
> > But is in the living standard:
> >
> http://www.whatwg.org/specs/web-apps/current-work/multipage/embedded-content-1.html#attr-img-srcset
>
> No support for recognizing srcset at all has been added to the validator.
> That's mostly intentional, because as far as I know, there are no browsers
> that support it yet. Even if we were to have the validator recognize srcset
> at all at this point, it would be just in order to emit a warning message
> that basically says, "Don't use the srcset attribute, because it's not
> supported by browsers yet."
>
>   --Mike
>
> --
> Michael[tm] Smith http://people.w3.org/mike
>
Received on Wednesday, 19 December 2012 17:00:09 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 19 December 2012 17:00:12 GMT