Bookmarklet to reload CSS without reloading the page… in modern browsers.

reloadcss bookmarklet

javascript:void (function(){[].forEach.call(document.querySelectorAll("link[rel=stylesheet][href]"),function(b){var a=b.href.replace(/(&|\??)reload=\d+/,"");b.href=a+(a.indexOf("?")>=0?"&":"?")+"reload="+(new Date().valueOf())})})();

reloadcss.js

(function() {
  // grab all stylesheets with a href
  [].forEach.call(document.querySelectorAll('link[rel=stylesheet][href]'), function(item) {
    // remove our cache buster if present
    var href = item.href.replace(/(&|\??)reload=\d+/, '');
    // add cache buster while preserving existing params
    item.href =  href + (href.indexOf('?') >= 0 ? '&' : '?') + 'reload=' + (new Date().valueOf());
  });
})();