Checkbox component doesn't take form prop

[vincerubinetti]

Many if not most of the other components accept a form attribute, where appropriate, to associate the control with a particular form.

The spec clearly allows controls to be associated with a form by either 1) nesting the controls in the form, or 2) having them separate in the DOM but linked together with form="some-form-id" on the control.

I find that component library developers all too often forget about the latter perfectly spec-valid approach. I do not like needing a parent form element because it affects layout, and display: contents is still problematic with accessibility in some browsers.

[vincerubinetti]

Neither do slider thumbs.

[vincerubinetti]

#4117

[snowystinger]

closing as the discussion is on the issue