仕様書

[1] Web Applications 1.0 http://www.whatwg.org/specs/web-apps/current-work/complete.html#dom-input-files

[3] [whatwg] Make files attribute of the input element writable ( (2012-05-30 07:41:33 +09:00 版)) http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2012-May/036229.html

[4] [whatwg] Make the files attribute of the input element writable ( (2013-01-18 08:31:37 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-January/038716.html

[5] Web Applications 1.0 r8057 A typo fix in window.open(), and some internal comments for making input.files writable ( (2013-07-16 05:30:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8056&to=8057

[6] 22682 – forms: Make <input type=file>.files writable (2017-07-23 16:32:26 +09:00) https://www.w3.org/Bugs/Public/show_bug.cgi?id=22682

[7] Make <input type=file>.files settable (annevk著, 2017-08-02 21:53:19 +09:00) https://github.com/whatwg/html/commit/5dc7db2108656c9ce4b2dc7a8bb7dcde5c03afee

[8] Make HTMLInputElement.prototype.files settable · Issue #2861 · whatwg/html (2017-08-03 15:14:39 +09:00) https://github.com/whatwg/html/issues/2861

[9] Make <input type=file>.files settable by annevk · Pull Request #2866 · whatwg/html (2017-08-03 15:15:16 +09:00) https://github.com/whatwg/html/pull/2866