I see it as: [] You feed in all URLs at once; `urls = ["/", "/sign_up/", "/about/",]` [] It pre-proccesses also JS files and tries to match CSS selectors as

I see it as: [] You feed in all URLs at once; `urls = ["/", "/sign_up/", "/about/",]` [] It pre-proccesses also JS files and tries to match CSS selectors as well. That would work for jQuery and Zepto! `$("#foo").html($("<span>").addClass("bar"))` Edit: Okay, that won't work for `addClass`! :)