LGTM2 for that plan. Good luck!
/Daniel
On 2026-03-05 15:09, YeongHan Kim wrote:
Hi! First of all, thanks for your interest!
I have no objections to the discussion points. I'll proceed as you
suggested.
Thanks!
- Yeonghan
2026년 3월 5일 목요일 AM 1시 28분 11초 UTC+9에 Philip Jägenstedt님이 작성:
Hi Yeonghan,
We discussed this in the API owners meeting today (present:
Daniel, Yoav, Chris, Vlad, Dan, Mike, Alex, me) and we think makes
sense to remove these in M148, without deprecation period:
AnimationEvent
CloseEvent
ErrorEvent
IDBVersionChangeEvent
PageTransitionEvent
TrackEvent
WebGLContextEvent
PopStateEvent
WheelEvent
The last two have non-zero usage, but it's still incredibly low.
Please use a flag for this group so that we can revert it with
Finch if necessary.
For KeyboardEvent, the risk seems slightly higher because it could
be used together with initKeyboardEvent() in old code, from the
time that this was the only supported way to create an initialize
such events.
For TransitionEvent, the usage is a bit high (~0.01%) so it makes
sense to be more careful.
So, for KeyboardEvent and TransitionEvent, we'd like to see them
deprecated for 3 milestones before removal in M151.
If you're happy with this approach, LGTM1.
Best regards,
Philip
On Tue, Mar 3, 2026 at 4:50 PM YeongHan Kim <[email protected]>
wrote:
You are right. I think my previous explanation was
insufficient and I apologize for the confusion. I have now
updated chromestatus with more detailed information.
In addition, events with 0 usage will be removed, and events
with low usage but still carrying risk, including
KeyboardEvents, will be deprecated without remove.
The status and risk of each individual event are summarized in
the sheet below. Please refer to it.
Reference:
https://docs.google.com/spreadsheets/d/1z3UP34xP0BDSOr5kINyMfBnPC1IdqrquJMtt806wuRM/edit?usp=sharing
Thank you.
2026년 2월 26일 목요일 AM 1시 23분 18초 UTC+9에
[email protected]님이 작성:
What makes you say there's no initEvent? Eg. this code
seems to work today:
let ke = document.createEvent("KeyboardEvent")
ke.initEvent("keydown")
ke.type
> 'keydown'
Even with the low use counter, given that this works today
I wouldn't be surprised if some old Enterprise LOB app
relies on this somewhere, in which case we need to follow
the process for making Enterprise-friendly breaking
changes
<https://www.chromium.org/developers/enterprise-changes/>.
This used to be the only way to create events, so
unfortunately I don't think we can consider this as zero
compat risk.
Rick
On Fri, Feb 20, 2026 at 4:51 AM Chromestatus
<[email protected]> wrote:
*Contact emails*
[email protected], [email protected]
*Explainer*
/No information provided/
*Specification*
https://dom.spec.whatwg.org/#dom-document-createevent
*Summary*
Remove support for creating non-allowlisted event
interfaces from document.createEvent(). After this
change, these will throw NOT_SUPPORTED_ERR as required
by the specification.
*Blink component*
Blink>DOM
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EDOM%22>
*Web Feature ID*
/No information provided/
*Motivation*
The DOM spec defines an allow-list for createEvent(),
but Chrome also supports interfaces not on this list:
- AnimationEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1162)
- CloseEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1227)
- ErrorEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1170)
- IDBVersionChangeEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1201)
- KeyboardEvents - Usage :
0.00003(https://chromestatus.com/metrics/feature/timeline/popularity/1228)
- PageTransitionEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1174)
- PopStateEvent - Usage :
0.000007(https://chromestatus.com/metrics/feature/timeline/popularity/1176)
- TrackEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1186)
- TransitionEvent - Usage :
0.012334(https://chromestatus.com/metrics/feature/timeline/popularity/1183)
- WebGLContextEvent - Usage :
0(https://chromestatus.com/metrics/feature/timeline/popularity/1224)
- WheelEvent - Usage :
0.000011(https://chromestatus.com/metrics/feature/timeline/popularity/1184)
These interfaces lack init*Event() methods, making the
created events unusable. Event constructors can be
used instead (e.g., new AnimationEvent()).
*Initial public proposal*
/No information provided/
*Debuggability*
/No information provided/
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/41228793
*Estimated milestones*
DevTrial on desktop 146
DevTrial on Android 146
*Link to entry on the Chrome Platform Status*
https://chromestatus.com/feature/5095987863486464?gate=6283297569243136
This intent message was generated by Chrome Platform
Status <https://chromestatus.com>.
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