[whatwg] Errormessages in forms

[Ian Hickson]

On Tue, 21 Jul 2009, Oldřich Vetešník wrote:
> Dne Fri, 26 Jun 2009 07:17:17 +0200 Ian Hickson <ian at hixie.ch> napsal/-a:
> > On Tue, 2 Dec 2008, Oldřich Vetešník wrote:
> > > Dne Tue, 02 Dec 2008 11:31:07 +0100 Ian Hickson <ian at hixie.ch> napsal/-a:
> > > >
> > > > Well, in the snippet above, the following seems adequate:
> > > >   <label> Instructions <input name=idfield>
> > > >            Type in dd-mm-yyy format</label>
> > > > ...and the custom error message should be set from script, using 
> > > > addCustomValidity(). How is that not accessible? It seems fine to 
> > > > me. The AT can read the whole label when entering the field, and 
> > > > the error message handling is done by the UA.
> > > 
> > > Alright, I agree, I don't have a problem with it. But is it possible 
> > > to create a detailed documentation for this, including "How do I 
> > > code it right?," with wrong good and examples? In my opinion, if 
> > > there was a good, clear and understandable (for human regular beings 
> > > that is) documentantion which developers could refer to, and if it 
> > > succeeded in getting known widely, it could improve the overall 
> > > knowledge and accessibility. It reminds of the longdesc attribute - 
> > > it's useful but nobody really knows how to make it right.
> > 
> > I think it would be reasonable to have examples, yes.
> > 
> > I've added one for <label> similar to the above. Do you have any other 
> > areas where you would like particular examples?
> 
> Mm, maybe adding an error message would be fine - just to nail the head 
> :) <p><label>Post code: <input name=pc> <small>Format: AB12 3CD</small> 
> <span>There seems to be an error, please type the post code in the 
> correct format.</span></label></p> (for example)

I've added an example to setCustomValidity() to show how to set an error 
message.


> > Note that Lachy is working on a whole authoring guide for HTML5 which will
> > probably cover things like this in more detail also.
> 
> Great, can I see it somewhere?

Lachy?

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'