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 ='1'> Test 1 </DIV>
<DIV id='2'> Details about <SPAN id='3'> Execution </SPAN> </DIV>
JavaScript
$("body").find("*").andSelf().each(function() {
alert(this.nodeName);
});