On Tue, 23 Oct 2012 00:48:11 +0200, jamesd <[email protected]> wrote:
> I am trying to make sense out of the xml:id tag and its usage as an > attribute definer. Reading the web doesn't offer anything but > contradictions. It seems that some want it to go away, leaving no way to > specify a common attributes, and just have a unique id be used. > > This leaves a non-politically correct person, like myself perplexed. If > several SVG or CSS components have a common attribute, how do I group > these elements by attribute? It would appear that the HTML name is being > deprecated, I assumed that xml:id would be its replacement. 'name' and 'xml:id' are not the same and were never meant to be the same, 'xml:id' is essentially the 'id' attribute but for any xml markup language. > I like to think of ethnicity in this regard. When I am asked my ID, I > have a name. I also check the ethnicity of white. So, I have two > distinct identifying characteristics. > > In my example for utilizing a singular display canvas for tablets and > HDTV screens, I have grouped several <g> elements with unique ids, but > with the same common denominator xml:id. This allows the display of the > elements to be controlled by id and a common xml:id attribute at the > same time. Makes sense to me, but others disagree, such as Opera. > > If xml:id is not meant to be used in this way, could someone try to > explain how to keep the two identifiers, without using xml:id and > without a complex javascript routine? Simplicity is best for me. From SVG Tiny 1.2 (http://www.w3.org/TR/SVGTiny12/struct.html#idAttrs): [[ Because they are intended for different environments, the 'id' and 'xml:id' attributes must not be used together on SVG elements in the same document. Such documents are not conforming SVG 1.2 Tiny content, and the behavior is not specified. ]] > Example file works with Firefox, Chrome and IE, not with Opera. Only Opera supports xml:id AFAIK- all the other browsers don't treat xml:id as an id attribute. I think xml:id is a historical mistake, so I'd strongly recommend you to avoid using that. Also see e.g https://bugs.webkit.org/show_bug.cgi?id=16505. -- Erik Dahlstrom, Core Technology Developer, Opera Software Co-Chair, W3C SVG Working Group Personal blog: http://my.opera.com/macdev_ed ------------------------------------ ----- To unsubscribe send a message to: [email protected] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ----Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
