Since March 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The validationMessage read-only property of the ElementInternals interface returns the validation message for the element.
A string containing the validation message of this element.
In the following example the validation message is set with ElementInternals.setValidity(), and then returned with validationMessage.
this.internals_.setValidity({ valueMissing: true }, "my message");
console.log(this.internals_.validationMessage); // "my message"
| Specification |
|---|
| HTML> # dom-elementinternals-validationmessage> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
validationMessage |
77 | 79 | 98 | 64 | 16.4 | 77 | 98 | 55 | 16.4 | 12.0 | 77 | 16.4 |
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https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/validationMessage