Clear browers Javascript and CSS

You can't clear browser cache using Javscript

But you can clear the application cache pragmatically.

$('.button').click(function() {
    $.ajax({
        url: "",
        context: document.body,
        success: function(s,x){
 
        $('html[manifest=saveappoffline.appcache]').attr('content', '');
 
            $(this).html(s);
    }
});
});

or you have to disable the cache control

<meta http-equiv='cache-control' content='no-cache'>
<meta http-equiv='expires' content='0'>
<meta http-equiv='pragma' content='no-cache'>

or you have to load your files(css/images/script) as following like way

/style.css?modified=20130116044521

?modified=20130116044521 is a dynamic parameter just like current-time-stamp

Application cache
http://www.html5rocks.com/en/tutorials/appcache/beginner/[^]

please check the following link for more caching information
http://www.mnot.net/cache_docs/[^]