HTMLInputElement: 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 December 2018.
The validationMessage
read-only property of the HTMLInputElement
interface returns a string representing a localized message that describes the validation constraints that the <input>
control does not satisfy (if any).
If the <input>
element is not a candidate for constraint validation (HTMLInputElement.willValidate
is false
), or it satisfies its constraints, the value is the empty string (""
).
If the element is a candidate for constraint validation (willValidate
is true
) and the constraints are not met (the HTMLInputElement.validity
object's valid
property is false
), the value is the error message that would be shown to the user during validation.
Value
A string.
Example
const input = document.getElementById("myInput");
const errorMessage = input.validationMessage;
Specifications
Specification |
---|
HTML Standard # dom-cva-validationmessage-dev |
Browser compatibility
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