ElementInternals: 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 ⁨March 2023⁩.

The validationMessage read-only property of the ElementInternals interface returns the validation message for the element.

Value

A string containing the validation message of this element.

Examples

In the following example the validation message is set with ElementInternals.setValidity(), and then returned with validationMessage.

js
this.internals_.setValidity({ valueMissing: true }, "my message");
console.log(this.internals_.validationMessage); // "my message"

Specifications

Specification
HTML
# dom-elementinternals-validationmessage

Browser compatibility