伪类 | Pseudo-classes

Fullscreen API

Living Standard

Defined :fullscreen.

HTML Living Standard

Living Standard

No change from HTML5.

Selectors Level 4

Working Draft

Defined :any-link, :local-link, :scope, :active-drop-target, :valid-drop-target, :invalid-drop-target, :current, :past, :future, :placeholder-shown, :user-error, :blank, :nth-match(), :nth-last-match(), :nth-column(), :nth-last-column(), and :matches(). No significant change for pseudo-classes defined in Selectors Level 3 and HTML5 (though semantic meaning not taken over).

HTML5

Recommendation

Defined the semantic meaning, in the HTML context, of :link, :visited, :active, :enabled, :disabled, :checked, and :indeterminate. Defined :default, :valid, :invalid, :in-range, :out-of-range, :required, :optional, :read-only, :read-write, and :dir().

CSS Basic User Interface Module Level 3

Candidate Recommendation

Defined :default, :valid, :invalid, :in-range, :out-of-range, :required, :optional, :read-only, and :read-write, but without the associated semantic meaning.

Selectors Level 3

Recommendation

Defined :target, :root, :nth-child(), :nth-last-of-child(), :nth-of-type(), :nth-last-of-type(), :last-child, :first-of-type, :last-of-type, :only-child, :only-of-type, :empty, and :not(). Defined the syntax of :enabled, :disabled, :checked, and :indeterminate, but without the associated semantic meaning. No significant change for pseudo-classes defined in CSS Level 2 (Revision 1).

CSS Level 2 (Revision 1)

Recommendation

Defined :lang(), :first-child, :hover, and :focus. No significant change for pseudo-classes defined in CSS Level 1.

CSS Level 1

Recommendation

Defined :link, :visited, and :active, but without the associated semantic meaning.