Radio defaultChecked Property
 Radio Object
Definition and Usage
The defaultChecked property returns the default value of the checked attribute.
This property returns true if the radio button is checked by default,
otherwise it returns false.
Syntax
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radioObject.defaultChecked
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Example
Example
The following example returns the default value of the checked attribute:
<html>
<body>
<form>
<input type="radio" id="radio1" checked="checked" />
</form>
<script type="text/javascript">
alert(document.getElementById("radio1").defaultChecked);
</script>
</body>
</html>
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Try it yourself »
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Radio Object
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