SO fiddle
Test Fiddle mainly for SO Questions
by Nick Craver
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div id='parent'>
<div id='child1'></div>
<div id='child2'></div>
<div id='child3'></div>
</div>JavaScript
alert($("#parent > div:eq(1)").attr("id"));