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The oninvalid property sets and returns the event handler for the invalid event.


element.oninvalid = handlerFunction;
var handlerFunction = element.oninvalid;

handlerFunction should be either null or a JavaScript function specifying the handler for the event.


See the DOM event handlers page for information on working with on... handlers.

The invalid event is fired when a submittable element has been checked and doesn't satisfy its constraints. The validity of submittable elements is checked before submitting their owner form, or after the checkValidity() of the element or its owner form is called.

See the invalid event documentation for more information about the event.


Specification Status Comment
WHATWG HTML Living Standard
The definition of 'invalid' in that specification.
Living Standard  

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 Contributors to this page: rolfedh, Guillaume-Heras
 Last updated by: rolfedh,