<html>
<head>
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
console.log($('#test1'));
$('#test1').find('td').each(function(i, o) {
var o = $(o);
alert(o.html());
});
var data = '<table><tr><td>td1</td></tr><tr><td>td2</td></tr></table>';
var table = $(data);
console.log(table);
table.find('td').each(function(i, o) {
var o = $(o);
alert(o.html());
});
});
</script>
</head>
<body>
<table id="test1"><tr><td>td1</td></tr><tr><td>td2</td></tr></table>
</body>
</html>