[whatwg] Web Forms 2.0 proposal
ian at hixie.ch
Tue Aug 15 02:26:57 PDT 2006
On Tue, 15 Aug 2006, porneL wrote:
> On Tue, 15 Aug 2006 00:57:15 +0100, Ian Hickson <ian at hixie.ch> wrote:
> > > If I'm reading the spec correctly then "pattern" is used to prevent/allow
> > > form
> > > submission, and to highlight an invalid entry.
> > >
> > > What I am suggesting is a filter that can be matched against for each
> > > keypress
> > > event. If keyCode matches then the character is appended to the input as
> > > normal. If it doesn't then the character is dropped on the floor.
> > A user agent would be allowed to do that in response to the pattern=""
> I'm afraid that is a difficult thing to implement. Partial string may not
> match pattern even if full would. For example:
> I this case user couldn't type anything, because first character won't match
> requirement of having two characters.
> To handle this properly UAs would need to modify their regexp engines.
Yes, implementing this would be non-trivial. I'm just saying it would be
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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