Another workaround is to add ?v=1 to your Javascript and CSS links. For example:
<link rel="stylesheet" type="text/css" media="all" href="https://stackoverflow.com/questions/8792255/./css/ipad.css?v=1">
<script src="./js/ipad.js?v=1"></script>
It seems one doesn’t have to update the number when your file has changed, as far as I can tell. Apparently, on an iPad 2 with the latest software update installed, it is enough to just hint at something dynamic.