kotlin-browser/web.html/HTMLFieldSetElement/validationMessage

validationMessage

open override val validationMessage: String(source)

The validationMessage read-only property of the HTMLFieldSetElement interface returns a string representing a localized message that describes the validation constraints that the

control does not satisfy (if any). This is the empty string as

elements are not candidates for constraint validation (HTMLFieldSetElement.willValidate is false).

MDN Reference