W3C home > Mailing lists > Public > public-html@w3.org > January 2010

Re: Decentralised extensibility idea (ISSUE-41)

From: Philip Jägenstedt <philipj@opera.com>
Date: Fri, 15 Jan 2010 18:05:09 +0100
To: "Toby Inkster" <tai@g5n.co.uk>, "Leif Halvard Silli" <xn--mlform-iua@xn--mlform-iua.no>
Cc: "public-html@w3.org" <public-html@w3.org>
Message-ID: <op.u6k22vmvatwj1d@sisko.linkoping.osa>
On Fri, 15 Jan 2010 17:13:43 +0100, Toby Inkster <tai@g5n.co.uk> wrote:

> Philip Jägenstedt wrote:
>> I don't think this is a very good idea, as data-* are always hidden
>> and not suitable for marking up content that is visible in the page.
> You are mistaking my proposal for a method of embedding data into a
> document. The proposal is not intended for embedding the kind of data
> that Microdata or RDFa embed; rather it's a general purpose extension
> point that other standards ("otherspecs") could use.

Yes, I did assume as much from the examples, but in fact I think they are  
effectively the same thing.

Only user agents can change the behavior of any element/attribute in other  
ways than what is already possible using JavaScript and CSS. If you are a  
user agent (especially a browser) then I would argue that you *shouldn't*  
be making stuff up, you should make a proof-of-concept and then propose  
the feature for standardization as a proper HTML feature. Centralization  
here is a good thing, because it makes vendors talk to each other and  
improve the feature before it is too late.

If, on the other hand, you are not a user agent, then the only thing you  
can do is embed data and make any behavior/rendering with JavaScript/CSS.  
For embedding the data/hooks you need you can use data-* attributes, clasa  
attributes, microdata or whatever you want.

Philip Jägenstedt
Core Developer
Opera Software
Received on Friday, 15 January 2010 17:17:12 UTC

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