HTMLInputElement: required property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The required property of the HTMLInputElement interface specifies that the user must fill in a value before submitting a form. It reflects the <input> element's required attribute.

While the HTML boolean required attribute is ignored if the type is hidden, range, color, submit, reset, button, and image, the required property is true for these input types if the attribute is present, false otherwise.

If a required input doesn't have a value, the ValidityState object's read-only valueMissing property will be true.

Value

A boolean.

Examples

js
const inputElement = document.getElementById("name");
console.log(inputElement.required);
inputElement.required = true;

Specifications

Specification
HTML
# dom-input-required

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
required

Legend

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Full support
Full support

See also