role-supports-aria-props.md
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role-supports-aria-props
Enforce that elements with explicit or implicit roles defined contain only aria-* properties supported by that role. Many ARIA attributes (states and properties) can only be used on elements with particular roles. Some elements have implicit roles, such as <a href="#" />, which will resolve to role="link".
Rule details
This rule takes no arguments.
Succeed
<!-- Good: the radiogroup role does support the aria-required property -->
<ul role="radiogroup" aria-required aria-labelledby="foo">
<li tabIndex="-1" role="radio" aria-checked="false">Rainbow Trout</li>
<li tabIndex="-1" role="radio" aria-checked="false">Brook Trout</li>
<li tabIndex="0" role="radio" aria-checked="true">Lake Trout</li>
</ul>
Fail
<!-- Bad: the radio role does not support the aria-required property -->
<ul role="radiogroup" aria-labelledby="foo">
<li aria-required tabIndex="-1" role="radio" aria-checked="false">Rainbow Trout</li>
<li aria-required tabIndex="-1" role="radio" aria-checked="false">Brook Trout</li>
<li aria-required tabIndex="0" role="radio" aria-checked="true">Lake Trout</li>
</ul>