The better advice is imo to keep your browser up-to-date. JS exploits have been come increasingly rare these days, mostly due to Chrome's excellent example of patching quickly and paying good money for exploits (e.g. Pwn2Own). JS 0days are imo far too valuable now to waste them on normal users. So no, disabling JS wouldn't make much sense, if your have an evergreen browser. Disable Flash & Java and try to minimize downloads is the security advice I give nowadays. Also don't install anything unless you absolutely have to (there are plenty of good in-browser options for programs we used to install, e.g. for file conversion).