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 August 2016.
ThevalidationMessage read-only property of theHTMLOutputElement 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 isfalse).
Value
The empty string,"";
Specifications
| Specification |
|---|
| HTML # dom-cva-validationmessage-dev |