2016-02-08 fock http://space.hatena.ne.jp/~/2330242329929249071/2330242329929249168 http://www.quicktopic.com/cgi-bin/link.cgi?link=http%3A%2F%2Fh.hatena.ne.jp%2Ftarget%3Fword%3Dwww.reddit.com%252F44nlmn&x=290976007.4 http://jsperf.com/44nlwt