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New in ARIA 1.2: ARIA IDL attributes

• Scott O’Hara writes about the new ARIA IDL (Interface Definition Language) attributes, allowing you to set element attributes succinctly in JavaScript via foo.role = 'checkbox' and foo.ariaChecked = false. Until now, we’ve had to use setAttribute, i.e. foo.setAttribute('aria-checked', 'false').
• This is supported in all Chromium browsers, but currently not in Firefox.
• It’s not yet possible to set attributes in this way if they take multiple IDREFs. For example, aria-labelledby="id1 id2 id3" has no new corresponding IDL attribute yet.

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