HTMLInputElement: defaultChecked 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 defaultChecked property of the HTMLInputElement interface specifies the default checkedness state of the element. This property reflects the <input> element's checked attribute.

The boolean checked attribute is valid for the radio (<input type="radio">) and checkbox (<input type="checkbox">) input types. The presence of the attribute sets the defaultChecked property to true.

Value

A boolean.

Examples

js
const inputElement = document.getElementById("contactMail");
console.log(inputElement.defaultChecked);

Specifications

Specification
HTML
# dom-input-defaultchecked

Browser compatibility

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desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
defaultChecked

Legend

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Full support
Full support

See also