JavaScript Reference/Javascript Properties/defaultChecked
"defaultChecked" Example
<!--
Example revised from
The Web Programmer"s Desk Reference
by Lazaro Issi Cohen and Joseph Issi Cohen
ISBN: 1593270119
Publisher: No Starch Press 2004
-->
<html>
<body>
<script language="JavaScript">
function function1() {
if (myRadioButton1.defaultChecked) {
alert("Radio 1 is checked");
}
if (myRadioButton2.defaultChecked) {
alert("Radio 2 is checked");
}
if (myCheckBox.defaultChecked) {
alert("Checkbox is checked");
}
}
</script>
<input id="myRadioButton1" type="radio" checked value="radiobutton">Radio 1<br>
<input id="myRadioButton2" type="radio" value="radiobutton">Radio 2<br>
<input id="myCheckBox" type="checkbox" value="checkbox" checked>Checkbox</p>
<input type="button" value="Click here" onclick="function1();">
</body>
</html>
"defaultChecked" is applied to
+----------------+--------------------------------------------------------------+
| Applied_To |<input type="checkbox"> <input type="radio"> |
+----------------+--------------------------------------------------------------+
"defaultChecked" Syntax and Note
Note:
Syntax:
document.getElementById("inputID").defaultChecked = value
document.all.inputID.defaultChecked = value // IE only