Update "undefined" definition in section 6.2.4 Value (within 6.2 Characteristics of States and Properties)

w3c / aria

Accessible Rich Internet Applications (WAI-ARIA)

https://w3c.github.io/aria/

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Update "undefined" definition in section 6.2.4 Value (within 6.2 Characteristics of States and Properties) #2172

Open rahimabdi opened 1 month ago

rahimabdi commented 1 month ago

Closes https://github.com/w3c/aria/issues/2156

This PR clarifies ambiguity in the varying behaviors of the undefined value for ARIA states and properties by providing a broader definition of "undefined" in section 6.2.4 Value.

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rahimabdi commented 1 month ago

Awaiting resolution on https://github.com/w3c/aria/issues/2177 before updating PR with new undefined definition.

For future work on this PR (and to address feedback above):

The definition should probably avoid referencing specific properties/states (or reference just aria-expanded as @smhigley notes)
Should include link to IDL reflection section
Should clarify how undefined is assigned (it sounds like it should be as the value, not the string)