The Book of JavaScript, 2nd Edition

Checkbox

The checkbox form element.

Properties

checked	FF, IE 3	true if a visitor has selected the checkbox, false otherwise. Setting the property to true will cause the checkbox to act as if a visitor had selected the box.
form	FF, IE 3	Read-only: Form containing the checkbox
name	FF, IE 3	Name of a checkbox
type	FF, IE 3	Read-only: Set to 'checkbox'
value	FF, IE 3	Value of the checkbox

Example:

if (window.document.my_form.the_checkbox.checked == true)
{
    alert("Thanks for clicking the checkbox!");
}

Handlers

onClick

FF, IE 3

Triggered when a visitor clicks the checkbox

Methods

click()

FF, IE 3

Simulates the act of clicking the checkbox