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 number input element whose content is a string. Note: While this is unsupported in Internet Explorer, any non-numeric value will be dismissed from the field if it is a number input.

Example

<input type="number" id="age">
var input = document.getElementById("age");
if (input.validity.badInput) {
  console.log("Bad input detected…");
} else {
  console.log("Content of input ok.");
}

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'ValidityState.badInput' in that specification.
Living Standard Live Standard
HTML 5.1
The definition of 'ValidityState.badInput' in that specification.
Recommendation No change from the previous snapshot HTML5.
HTML5
The definition of 'ValidityState.badInput' in that specification.
Recommendation First snapshot of  HTML Living Standard containing this interface.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? 29 (29) Not supported ? ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? 29.0 (29) ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: amy-mac, tkrotoff, cvrebert, Jeremie, teoli
 Last updated by: amy-mac,