[whatwg] [WF2] |min| and |max| number of selected |option|s

Ian Hickson ian at hixie.ch
Wed Nov 5 07:20:25 PST 2008

On Sat, 31 May 2008, Christoph Päper wrote:
> When using
>   <input type=checkbox>
> or
>   <select multiple>
> one somtimes wants to limit the number of selected check boxes or 
> options. I have no idea how to model this with |input|, but |select| 
> could adopt the |min| and |max| attributes. They would not limit the 
> content of |value| but the number of selected |option|s, which is 
> similar to what is already specified for file upload controls. A common 
> and special case would be setting the same value on both attributes to 
> require a certain number of options to be selected.
> I'd really like it if someone could come up with a way to make this work 
> with |input|, too.

Since this is a pretty specialised desire, and not one that we really want 
to encourage (it's somewhat sub-optimal UI), I think this is something we 
should leave up to scripts to enforce, using oninput="", 
setCustomValidity(), and so forth.

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

More information about the whatwg mailing list