This feature is well established and works across many devices and browser versions. It’s been available across browsers since December 2018.
The reportValidity() method of the HTMLTextAreaElement interface performs the same validity checking steps as the checkValidity() method. In addition, if the invalid event is not canceled, the browser displays the problem to the user.
reportValidity()
None.
Returns true if the element's value has no validity problems; otherwise, returns false.
| Specification |
|---|
| HTML> # dom-cva-reportvalidity-dev> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
reportValidity |
40 | 17 | 49 | 27 | 10.1 | 40 | 64 | 27 | 10.3 | 4.0 | 40 | 10.3 |
HTMLTextAreaElement.checkValidity()<textarea><form>:valid and :invalid pseudo-classes
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLTextAreaElement/reportValidity