August 1999
Intermediate to advanced
1488 pages
72h 53m
English
Content preview from Pure JavaScript
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Checkbox.defaultChecked
JavaScript 1.0+, JScript 3.0+ Nav2+, IE 4+ Syntax
document.form. checkbox.defaultChecked
Description
The defaultChecked property holds the initial state of a check box as defined by the checked attribute of the <input> tag. Because this property only holds the initial state of the check box, it is a read-only Boolean value.
Example
In Listing 7.39, the defaultChecked property is used to reset the car door check boxes to their initial state.
Listing 7.39 Resetting Check Boxes with the defaultChecked Property
<html> <h2>Car Purchase Sheet</h2> Step1: Please select the door style you want on your new car:<BR> <form name="orderForm"> <input type="checkbox" name="door4">4 doors<br> <input type="checkbox" name="door2" ... |
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