History of String.prototype.concat() Revision history for: English (US) Jul 22, 2016, 4:59:32 PM eduardoboucas Add "Return value" section as per Bug 1287421 Previous Jul 12, 2016, 8:46:09 AM djziegler Previous Jul 8, 2016, 5:36:49 AM fscholz Previous Jun 27, 2016, 11:43:03 AM eolognt Changed "optional" to cover string3 and above Previous Jan 25, 2016, 8:58:16 AM thewarpaint Fix typo on JSPerf link Previous Jan 4, 2016, 7:54:28 AM fscholz add ES draft Previous Jul 13, 2015, 7:44:07 AM fscholz fix compat parsing error; cleanup Previous Nov 14, 2014, 12:42:40 AM Mingun Standartized markup, double to single quotes, added {{jsxref}} macro, added `Reference` tag. Previous Dec 12, 2013, 10:40:15 AM fscholz Previous Dec 12, 2013, 10:38:18 AM fscholz cleanup