[poiuyt098]

How about making it submit the "off" value while you're at it? So I wouldn't need js hacks for arrays of checkboxes on forms.

[sourdoughness]

The way this is implemented, it’s polish over a checkbox, with a fallback to the checkbox where it’s not supported. The semantics has therefore got to be the same as a checkbox - that is, no (native) submission of “off” switches.