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how to enable disable checkbox using javascript?

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Jun 13.2005

how to enable disable checkbox using javascript?

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JavaScript

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@CharlesJun 13.2005 — <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Content-Script-Type" content="text/javascript">
<meta name="Content-Style-Type" content="text/css">
<title>Example</title>

<script type="text/javascript">
<!--
onload = function () {
var e, i = 0;
while (e = document.forms[0].elements[['fie', 'foe', 'fum'][i++]]) {
e.disabled = true;
}
}
// -->
</script>

<style type="text/css">
<!--
fieldset {padding:1ex; width:10em}
label {display:block; text-align:left}
input {margin-right:1ex}
button {display:block; margin:1ex auto}
-->
</style>

</head>
<body>
<form action="some-script.pl">
<fieldset>
<legend>Giant Says</legend>
<label><input name="fee" onclick="this.form.fie.disabled = !this.checked" type="checkbox">Fee</label>
<label><input name="fie" onclick="this.form.foe.disabled = !this.checked" type="checkbox">Fie</label>
<label><input name="foe" onclick="this.form.fum.disabled = !this.checked" type="checkbox">Foe</label>
<label><input name="fum" type="checkbox">Fum</label>
<button name="go" type="submit">Submit</button>
</fieldset>
</form>
</body>
</html>
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