Why doesn't Javascript recognize the HTML class attribute?

Posted by Cornflake on Stack Overflow See other posts from Stack Overflow or by Cornflake
Published on 2010-05-03T22:42:37Z Indexed on 2010/05/03 22:48 UTC
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JavaScript

Can anyone help me with a Javascript question, please? Why does the following code display only message boxes with the word "null" in them? And I think there are not enough of them either.

<html>
<head>
    <script type="text/javascript">
        function showElementClasses(node)  {
            var els = node.getElementsByTagName("*");
            for(var i=0,j=els.length; i<j; i++)
                alert(els[i].getAttribute("class"));
                alert("Class: " + els[i].className);
        }

        showElementClasses(document);
    </script>
</head>
<body class="bla">
    <div class="myclass" style="width: 500; height: 400" id="map"></div>
</body>
</html>

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Developer IT

Why doesn't Javascript recognize the HTML class attribute? - Developer IT

Why doesn't Javascript recognize the HTML class attribute?

JavaScript

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