History of Math.atanh() Revision history for: English (US) Jul 28, 2016, 9:15:16 AM eduardoboucas Add "Return value" section as per Bug 1287421 Previous Dec 28, 2015, 3:51:21 PM fscholz Remove {{harmony}}; remove "Experimental" tag; remove {{experimental_inline}}; add link to ES draft spec Previous Jul 7, 2015, 6:57:34 AM fscholz fix compat parsing error; cleanup Previous Feb 4, 2015, 11:01:24 PM Mingun Standardized and cleaned markup, added {{Compat*}} macros, fixed polyfill, added "See also" section, added `Reference` tag. Previous Oct 18, 2014, 6:35:56 AM realityking Supported in Opera 25 Previous Oct 8, 2014, 3:00:16 PM realityking Supported in Chrome 38 Previous Sep 24, 2014, 2:21:08 AM fscholz clearing tech review. no need to set this flag when just updating compat data. Previous Sep 23, 2014, 1:45:18 PM realityking Add compatibility info for Safari 7.1 and iOS 8 Previous Aug 20, 2014, 10:23:01 AM fscholz fix polyfill Previous Mar 8, 2014, 2:19:39 AM fred.wang