Dynamic HTML: The Definitive Reference

Name

defaultChecked — NN 2 IE 3 DOM 1

Synopsis

Read/Write

Whether the element has the CHECKED attribute set in the tag. You can compare the current checked property against defaultChecked to see whether the state of the control has changed since the document loaded. Changing this property does not affect the current checked status.

Example

var cBox = document.forms[0].checkbox1
if (cBox.checked != cBox.defaultChecked) {
    process for changed state
}

Value

Boolean value: true | false.

Default

Determined by HTML tag attribute.