HTMLObjectElement: validity property

The validity read-only property of the HTMLObjectElement interface returns a ValidityState object that represents the validity states this element is in. Although <object> elements are never candidates for constraint validation, the validity state may still be invalid if a custom validity message has been set.

Value

A ValidityState object.

Examples

The following example demonstrates that an <object> is in an invalid state when a customError is set; in this state, checkValidity() returns true while the validityState’s validity property is false.

const objectElem = document.getElementById("myObjectElm");
objectElem.setCustomValidity("This object element is invalid.");
const validityState = objectElem.validity;
console.log(validityState.valid); // false
console.log(validityState.customError); // true
console.log(objectElem.checkValidity()); // true

Specifications

Browser compatibility

See also

• checkValidity()
• <object>
• <form>
• Learn: Client-side form validation
• Guide: Constraint validation