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Re: using the data* attribute to identify element sub roles

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Mon, 18 Feb 2013 19:57:26 +1100
Message-ID: <CAHp8n2=8t+b8Z6J9Zk7rF+s+fyhECXwrP_Ms=rjWrY992Ska+A@mail.gmail.com>
To: Steve Faulkner <faulkner.steve@gmail.com>
Cc: Anselm Hannemann <info@anselm-hannemann.com>, public-html@w3.org
On Mon, Feb 18, 2013 at 7:31 PM, Steve Faulkner <faulkner.steve@gmail.com>wrote:

> Hi Silvia,
>
> I realise what the current definition of data-* is


The spec guarantees that it won't change. That's what I was trying to point
out.
http://www.w3.org/TR/html5/single-page.html#extensibility



> I am exploring possibilities of how to resolve the use case I described in
> my previous email.
>
i.e. how to identify sub roles in HTML
>

As a Web developer or in the browser? What's the effect of identifying
subroles? Does it bear the meaning "this element is of type xxx"?

Why not use microdata for this? E.g.

<h1>heading</h1> <p itemprop="subheading">subheading</p>

<article itemprop="comment"> blog post comment </article>

Cheers,
Silvia.

data-* may well not be the appropriate method as i said "wild idea"
>
>
> regards
> SteveF
>
>
> On 18 February 2013 08:26, Silvia Pfeiffer <silviapfeiffer1@gmail.com>wrote:
>
>> @data-xxx attributes are for authors only. We don't do anything in
>> browsers with them and therefore will not standardise any @data-xxx
>> attributes in the HTML spec (see the Extensibility section):
>>
>> "Authors can include data for inline client-side scripts or server-side
>> site-wide scripts to process using the data-*=""<http://www.w3.org/TR/html5/single-page.html#attr-data-*>
>>  attributes. These are guaranteed to never be touched by browsers, and
>> allow scripts to include data on HTML elements that scripts can then look
>> for and process."
>>
>> It's the safe way for Web developers to use custom attributes so, when
>> you implement a WebSite you're free to do whatever you want with them.
>>
>> Cheers,
>> Silvia.
>>
>>
>> On Mon, Feb 18, 2013 at 7:12 PM, Steve Faulkner <faulkner.steve@gmail.com
>> > wrote:
>>
>>> Hi Ansel,
>>>
>>> use cases, yes.
>>>
>>> the use cases I had in mind is that currently the definitions of some
>>> elements have differing uses:
>>>
>>> article can idenity a 1000 word essay, a 100 word summary of said essay
>>> and a 5 word comment on the same essay, but there is no method defined to
>>> idenitfy the different uses. If there was a defined method, a range of
>>> software could make use of it such as search engines and assistive
>>> technology.
>>>
>>>
>>> regards
>>> Stevef
>>>
>>>
>>> On 18 February 2013 07:59, Anselm Hannemann <info@anselm-hannemann.com>wrote:
>>>
>>>> From: Steve Faulkner <faulkner.steve@gmail.com>
>>>> Date: Mon, 18 Feb 2013 07:26:52 +0000
>>>> Message-ID: <
>>>> CA+ri+Vn+zcfZT5BP2w3x4WNwu2o2h9GvyPff0znDPVzqaxJYvg@mail.gmail.com>
>>>> To: HTMLWG WG <public-html@w3.org>
>>>> NOTE: this is just a wild idea.
>>>>
>>>> allow the data attribute [1] to be used to identify element sub roles:
>>>>
>>>> examples:
>>>>
>>>> <h1>heading</h1> <p data-p="subheading">subheading</p>
>>>>
>>>> <article data-article="comment"> blog post comment </article>
>>>>
>>>> allow data-elementname="subRole" pairs to be added to a public registry.
>>>>
>>>> thoughts?
>>>>
>>>> I don't understand the logic of the data-attribute yet. Shouldn't there
>>>> be a reference to which the attribute refers?
>>>> In that case to the h1-element. That means, for me it would be logical
>>>> to have:
>>>>
>>>> <h1>heading</h1> <p data-h1="subheading">subheading</p>
>>>>
>>>> But then the semantics is away for the element attribute itself.
>>>> I think I have a lack on use-cases here to can think of if this
>>>> could work and is useful.
>>>>
>>>> / Anselm
>>>> -----------
>>>> Anselm Hannemann
>>>> @helloanselm
>>>>
>>>> [1]
>>>> http://www.w3.org/html/wg/drafts/html/master/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes
>>>>
>>>> -- with regards
>>>>
>>>> Steve Faulkner
>>>>
>>>>
>>>
>>> <http://www.paciellogroup.com/resources/wat-ie-about.html>
>>>
>>
>>
>
>
> <http://www.paciellogroup.com/resources/wat-ie-about.html>
>
Received on Monday, 18 February 2013 08:58:15 GMT

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