ValidityState.badInput

The read-only property ValidityState.badInput indicates if the user has provided input that the browser is unable to convert. For example, if you have a mail input element whose content does not have a '@'.

Example

<input type="mail" id="email">

var input = document.getElementById("email");
if (input.validity.badInput) {
  console.log("Bad input detected…");
} else {
  console.log("Content of input ok.");
}

Specifications

Specification	Status	Comment
WHATWG HTML Living Standard The definition of 'ValidityState.badInput' in that specification.	Living Standard	Live Standard
HTML5.1 The definition of 'ValidityState.badInput' in that specification.	Working Draft	No change from the previous snapshot HTML5.
HTML5 The definition of 'ValidityState.badInput' in that specification.	Recommendation	First snapshot of WHATWG HTML Living Standard containing this interface.

Browser compatibility

See also

• Constraint validation
• Forms: Data form validation