Form validation
Method of setting required fields and field types without requiring JavaScript. This includes preventing forms from being submitted when appropriate, the `checkValidity()` method as well as support for the `:invalid`, `:valid`, and `:required` CSS pseudo-classes.
elementinternals api: ariainvalid
element api: ariainvalid
htmlinputelement api: `invalid` event
webgl2renderingcontext api: invalidateframebuffer
webgl2renderingcontext api: invalidatesubframebuffer
xpathresult api: invaliditeratorstate
css at-rule: `@font-face`: src: drop invalid item (not src string)
css selector: `:-moz-submit-invalid`
css selector: `:invalid`
css selector: `:invalid`: applies to `<form>` elements
css selector: `:user-invalid`
12 results found.