HTMLOutputElement: validationMessage property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since December 2018.

The validationMessage read-only property of the HTMLOutputElement interface returns a string representing a localized message that describes the validation constraints that the <output> control does not satisfy (if any). This is the empty string as <output> elements are not candidates for constraint validation (HTMLOutputElement.willValidate is false).

Value

The empty string, "";

Specifications

Specification
HTML Standard
# dom-cva-validationmessage-dev

Browser compatibility

BCD tables only load in the browser

See also