Web platform features explorer

Form validity pseudo-classes

The form validity CSS pseudo-classes match <form> elements based on the constraints of a form field, such as validity (:valid, :invalid, :in-range, :out-of-range) and necessity (:optional or :required).

Status

Baseline Widely Available (since 2018-01-29)

MDN documentation

Specifications

Browser support (view on caniuse.com)

  • Chrome 10 Released on 2011-03-08
  • Chrome Android 18 Released on 2012-06-27
  • Edge 12 Released on 2015-07-29
  • Firefox 4 Released on 2011-03-22
  • Firefox for Android 4 Released on 2011-03-29
  • Safari 5 Released on 2010-06-07
  • Safari on iOS 5 Released on 2011-10-12

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