[1] Remove more types from document.createEvent() (ayg著, 2017-08-06 21:41:25 +09:00) https://github.com/whatwg/dom/commit/5a532da58455e55b1e611161b72224d083fee7d4

[2] "create an event" doesn't work for certain UI events · Issue #414 · whatwg/dom (2018-04-07 16:06:35 +09:00) https://github.com/whatwg/dom/issues/414

[3] Define event constructing steps by annevk · Pull Request #614 · whatwg/dom (2018-04-07 16:07:05 +09:00) https://github.com/whatwg/dom/pull/614