JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/themes/ui-lightness/jquery-ui.css">
Click on the blue text for the index of the parent
<ul>
<li><a>zero</a></li>
<li><a>one</a></li>
<li><a>two</a></li>
<li><a>three</a></li>
</ul>
<ul id='target'>
<li><a>zero</a></li>
<li><a>one</a></li>
<li><a>two</a></li>
<li><a>three</a></li>
</ul>
CSS
#target {
color: blue;
}
JavaScript
$('#target li a').live('click', function() {
var index = $(this).parent().index();
alert(index);
return false;
});