Radio checked Property
 Radio Object
Definition and Usage
The checked property sets or returns whether or not a radio button is
checked.
Syntax
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radioObject.checked=true|false
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Example
Example
The following example checks and un-checks a radio button:
<html>
<head>
<script type="text/javascript">
function check()
{
document.getElementById("radio1").checked=true
}
function uncheck()
{
document.getElementById("radio1").checked=false
}
</script>
</head>
<body>
<form>
<input type="radio" id="radio1" />
<input type="button" onclick="check()" value="Check" />
<input type="button" onclick="uncheck()" value="Uncheck" />
</form>
</body>
</html>
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Try it yourself »
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Radio Object
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