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Re: data-* : Custom Data Attributes

From: Doug Schepers <schepers@w3.org>
Date: Wed, 04 May 2011 19:23:28 -0400
Message-ID: <4DC1DFF0.1090002@w3.org>
To: "Frost, Jon A." <frostjo@missouri.edu>
CC: "www-svg@w3.org" <www-svg@w3.org>
Hi, Jon-

Frost, Jon A. wrote (on 5/4/11 1:07 PM):
> Over the last 2 years I have been using the “data-“ attribute more and
> more in HTML5. The Custom Data Attribute is a very useful way to pass in
> and manage associated data – great for many of my applications. We have
> sXBL, but that is really a different beast. The parameter proposal
> sounds very useful, but it does not look nearly as useful as HTML5’s
> custom data attribute which also is already well-defined for us.

The Parameter functionality is very different from Microdata (of which 
@data-* attributes are part).  Parameters actually allow shapes to be 
altered dynamically on use, while @data- is just a way of adding 
metadata, unless I'm missing something.

> I know that we can alter the DTD to make this happen in each of our
> SVGs, but a more flexible and standard approach would be very useful to
> me anyway. It have not heard much discussion about adding this to SVG2
> but I might have missed the conversations. Please point me in the right
> direction, or let me know what you all think.

In the past, the SVG WG has been very amenble to adding new metadata 
mechanisms, such as RDFa and ARIA attributes, so I expect that we will 
also add @data-* to SVG for parity with HTML5, as well.  (It wouldn't 
surprise me if you could use them in SVG today in most browsers that 
support Microdata, though it wouldn't validate.)

-Doug Schepers
W3C Team Contact, SVG, WebApps, and Web Events WGs
Received on Wednesday, 4 May 2011 23:23:30 UTC

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