[whatwg] Should :default apply to checkboxes, radios, and options?
L. David Baron
dbaron at dbaron.org
Fri Apr 30 13:43:13 PDT 2010
On Friday 2010-04-30 13:05 -0700, Tab Atkins Jr. wrote:
> On Fri, Apr 30, 2010 at 12:12 PM, L. David Baron <dbaron at dbaron.org> wrote:
> > For a long time, Gecko has implemented the behavior that the
> > :default pseudo-class matches checkboxes, radios, and options that
> > are selected by default (i.e., anything that matches :checked by
> > default). I think supporting it for option elements is explicitly
> > stated in the spec where :default was introduced:
> > # One example is the default submit button among a set of buttons.
> > # Another example is the default option from a popup menu.
> > # Multiple elements in a select-many group could have multiple
> > # :default elements, like a selection of pizza toppings for
> > # example.
> > -- http://www.w3.org/TR/css3-ui/#pseudo-default
> > and I think supporting it for radios and checkboxes logically
> > follows from that.
> > However, the HTML5 spec says that :default should not apply in these
> > cases:
> > http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#selector-default
> > I don't feel particularly strongly about this one, but it seems like
> > the original intent of :default was to match both things that are
> > the "default button" and things that are "selected by default".
> > Was this difference with existing implementation behavior
> > intentional?
> By "selected by default", do you mean things that had @checked or
> @selected on page load?
Not quite... just things that have @checked or @selected in the
L. David Baron http://dbaron.org/
Mozilla Corporation http://www.mozilla.com/
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