aria-roles-valid

role attribute must be a valid, non-abstract ARIA role

Checks that an explicit role="" attribute resolves to a real, non-abstract WAI-ARIA role.

Applies to. Applies to any element with a non-empty role="" attribute in the composed DOM.

Expectation. At least one role token names a concrete, non-abstract ARIA role. Graded by what the element falls back to when none does:

• FAIL on a roleless host (div, span, custom element), which is left exposed as generic, so the role the author meant reaches no one.
• CANTTELL where the element has a native role (a <button>, <nav>, <a href>), which the accessibility tree keeps using. ACT 674b10 lists 4.1.2 as a secondary requirement only, "satisfied through the implicit role," so the bad token is worth reporting but is not itself the criterion failing.

Examples

<div role="button">Click</div>

<div role="buton"></div>

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