.replace method in jquery
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                amit
            
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        Published on 2012-07-02T03:13:14Z
        Indexed on 
            2012/07/02
            3:15 UTC
        
        
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jQuery
i want to replace class me to old when user clicks on a tag, i want to do that only with .replace function. My purpose to learn how replace method work. But the function which i have made not working.
<head>
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
$(function(){
    $('a').click(function(){
        $(this).attr('class').replace('me','old')
        })
    })
</script>
</head>
<body>
<a href="#" class="me">click</a>
</body>
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