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="wrapper">
<img src="myphoto.png" height="400px" width="500px">
</div>

JavaScript

$('#wrapper').hide();
alert(jQuery('img').css('height'));