* 歴史

[REFS[
- [1] [CITE@en[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.)]]
( ([TIME[2013-03-14 09:26:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7752&to=7753>
]REFS]

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