Re: The details element

details/summary was removed from HTML5 REC because it did not have 2
interoperable implementations (like a number of other new features which
were also removed).  It lives on in HTML 5.1 [1]  as there is a reasonable
expectation that interoperable implementations will happen in the timeframe
of 5.1 going to REC (in 2016)


[1]
http://www.w3.org/html/wg/drafts/html/master/interactive-elements.html#the-details-element

--

Regards

SteveF
HTML 5.1 <http://www.w3.org/html/wg/drafts/html/master/>

On 10 November 2014 13:07, Andrea Rendine <master.skywalker.88@gmail.com>
wrote:

> To the attention of whoever interested.
> Does anybody know when the <details> element, along with its controller
> <summary> and all references to them, were removed from the official spec?
> And more important, why was it removed? Is it due to lacking support?
> Because, IMHO, removing an element from the list of allowed elements is not
> the best way to ensure that authors make use of it, thus driving vendors to
> upgrade browsers and offer support. I mean, authors worrying about validity
> issues will not use it at all. Like me, as I'm feeling the urge of removing
> it instead of ensuring its functionality via a polyfill.
> I hope the removal was a mistake. Evidence would be the fact that it is
> not listed among the obsolete elements. Despite the section name, the list
> also contains the ominous <hgroup> element, which in an early stage was
> meant to group headings and subheadings in the form of <h#> elements poorly
> used.
> Otherwise it could be due to the fact that it is basically a
> presentational element, whose purpose is NOT to highlight a real "details"
> section, but to have a widget with an open/close toggle behavior. But, were
> that the case, why is the element still present in the nightly?
> As a side note, for validator crew (and unfortunately this means only Mr
> Michael Smith): the validator says that the element "is not supported
> properly by browsers yet", but as a matter of fact it is a non-conforming
> element now. Please update the error message properly when you have time.
> Sorry for verboseness.
> Andrea R.
>