Add LI to UL
<html> <head> <script type="text/javascript" src="js/jquery-1.3.2.js"></script> <script type="text/javascript"> $(document).ready(function(){ var mappedItems = $("li").map(function (index) { var data = $("<li>").text($(this).text()).get(0); $(data).text($(data).text().toUpperCase()); return data; }); $("#results").append(mappedItems); }); </script> </head> <body> <body> <ul> <li>asdf</li> <li>asdf</li> <li>asdf</li> </ul> <ul id="results"> </ul> </body> </html>