So many “check” in this post title. haha~
You can get the checkbox state by the the following jQuery.
// true if checked
$('#checkbox-id').is(":checked");
Try the following HTML.
<html>
<head>
<title>jQuery - Check if Checkbox is CHECKED</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#checkbox-id').click(function() {
alert($('#checkbox-id').is(":checked"));
// For older version of jQuery
//alert($('#checkbox-id').attr('checked'));
});
});
</script>
</head>
<body>
<input id="checkbox-id" type="checkbox" />
</body>
</html>
Done =)
Reference: jQuery: 判斷 checkbox 是否被選取
Eureka! 
It’s not work. Are u sure?
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I just tried again the example in Apache 2.2. Every works fine.
Have you checked the chrome console and see if there is any js error?
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