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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This page was last modified on Apr 10, 2025 by MDN contributors.

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