Provides special properties and methods (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating the layout and presentation of
Members
boolean
# checkValidity
Returns whether a form will validate when it is submitted, without having to submit it.
string
# validationMessage
Returns the error message that would be displayed if the user submits the form, or an empty string if no error message. It also triggers the standard error message, such as "this is a required field". The result is that the user sees validation messages without actually submitting.
ValidityState
# validity
Returns a ValidityState object that represents the validity states of an element.
boolean
# willValidate
Returns whether an element will successfully validate based on forms validation rules and constraints.