Theindeterminate property of theHTMLInputElement interface returns a boolean value that indicates whether the checkbox is in theindeterminate state. For example, a "select all/deselect all" checkbox may be in the indeterminate state when some but not all of its sub-controls are checked. Theindeterminate state can only be set via JavaScript and is only relevant tocheckbox controls.

It is unrelated to theHTMLInputElement.checked property, and an indeterminate checkbox can be either checked or unchecked. Being indeterminate only affects the checkbox's appearance (see example below), not its presence when submitted (which is controlled by the checkedness).

Value

A boolean.

Examples

<input type="checkbox" /><label for="indeterminate-checkbox">Indeterminate checkbox</label>

const checkbox = document.getElementById("indeterminate-checkbox");checkbox.indeterminate = true;

Specifications

Browser compatibility

See also

• HTMLInputElement
• HTMLInputElement.checked
• <input>
• Indeterminate state checkboxes
• CSS:indeterminate property