歴史

[1] Web Applications 1.0 r7753 Add an 'invalid' event sent to the _form_ when submission fails due to form validation. (The normative parts of this change were accidentally put in the previous checkin, sorry.) ( (2013-03-14 09:26:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=7752&to=7753

[2] Add <form>'s "firing submission events" flag, tkent-google, 2019-05-16 03:27:00 +09:00, 2021-07-02T11:44:50.000Z https://github.com/whatwg/html/commit/cb55dca6a71e79a5ce3e078dc8d7b525c890bfe8