HTMLSelectElement: setCustomValidity() method

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This feature is well established and works across many devices and browser versions. It’s been available across browsers since December 2018.

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The HTMLSelectElement.setCustomValidity() method sets the custom validity message for the selection element to the specified message. Use the empty string to indicate that the element does not have a custom validity error.

Syntax

setCustomValidity(string)

Parameters

string: The string containing the error message. The empty string removes any custom validity errors.

Return value

None (undefined).

Specifications

Specification
HTML # dom-cva-setcustomvalidity-dev