History of Object.isSealed() Revision history for: English (US) Jul 25, 2016, 4:37:13 AM eduardoboucas Add "Return value" section as per Bug 1287421 Previous Jan 4, 2016, 3:31:08 AM fscholz add ES draft Previous Jul 9, 2015, 5:46:49 AM fscholz fix compat parsing error; cleanup Previous Nov 25, 2014, 7:03:41 AM claudepache Previous Nov 25, 2014, 6:59:28 AM claudepache supported in IE11 (alas) Previous Sep 23, 2014, 3:15:23 AM Mingun Standartized markup, added Compat* and jsxref templates, added “Chrome for Android” section to compatibility table, double to single quotes in code examples. Previous Sep 22, 2014, 11:15:56 PM ziyunfei Previous Nov 26, 2013, 5:37:32 AM fscholz cleanup Previous May 28, 2013, 8:33:24 AM Sheppy title.JavaScript/Reference/Global_Objects/Object/isSealed Web/JavaScript/Reference/Global_Objects/Object/isSealed Previous Dec 23, 2012, 8:17:22 AM ethertank title.