@AppleAndAria @catsalad @mozilla @torproject @eff you can manage your javascript in chrome://settings/content/javascript, note that this will break websites

the general idea is you disable javascript by default and enable it on a per site basis

as for dns, it largely depends on what you're using for managing your dns on which platform

on *nix you just set whatever manages your resolv.conf to point to any dns server that can block ads for you