A radio button should be "required" if one of a member of the same group has the "required" attribute.

• Component: Forms
• Status: RESOLVED FIXED

[Kent Tamura]

<form>
 <input type=radio name=group1 required id=radio1>
 <input type=radio name=group1 id=radio2>
</form>

radio2 is always valid in WebKit because it has no "required". This is a behavior described in old HTML5 draft.

The current HTML specification says radio2 should be invalid because radio1 has required and there is no checked radio button in the group.

[Kent Tamura]

The behavior was fixed by http://trac.webkit.org/changeset/105710