Re: [csswg-drafts] [css-pseudo-4] Identity of Element.pseudo() return value (#3607)

It's "always the same object, up to observability constraints". So if you don't hold a reference and don't set any expandos, the object can be freed and a fresh one given later, but otherwise it must be cached.

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Received on Tuesday, 26 February 2019 15:36:11 UTC