Done in the CSSPseudoElement I2S thread, pasting it here as well - https://github.com/danielsakhapov/CSSPseudoElementDoc. The list of pseudos supported is limited to the one supported by CSSPseudoElement, yes
On Friday, February 20, 2026 at 8:31:11 PM UTC+1 Vladimir Levin wrote: > I believe this depends on CSSPseudoElement from this feature: > https://chromestatus.com/feature/5194399398756352 > > In the CSSPseudoElement, you noted that this is currently only for > `::after` `::before` and `::marker`. Does this intent (pseudoTarget) also > have similar limitations? In other words, if I have an animation on > `::view-transition-group(*)`, for example, and I observe an AnimationEvent, > will `pseudoTarget` be null? > > Also a similar comment about developer need as the other intent: is it > possible to put together a brief explainer (it could be one explainer for > both intents) that captures the value of this feature? > > Thanks! > Vlad > > > On Fri, Feb 20, 2026 at 9:31 AM Daniil Sakhapov <[email protected]> > wrote: > >> *Contact emails* >> [email protected] >> >> *Explainer* >> *Please note, that the spec edit has been mostly approved and finalized, >> but put on hold due to a major spec repo refactoring. But I don't think it >> should stop from shipping, since ideally it would be shipped together with >> CSSPseudoElement interface in M147.* >> >> *Specification* >> https://github.com/w3c/uievents/pull/413/changes >> >> *Summary* >> Specific events are now extended to have `.pseudoTarget` that is either >> CSSPseudoElement (if interaction has been with pseudo-element) or null. >> This allows to have more specific information on the event origin, e.g. >> that not just an ultimate originating element (Event.target) has been >> clicked, but more specifically that it was ::after. Note that the >> Event.target is unchanged so event only has extra info on pseudo-element >> interaction. The events are UIEvent, AnimationEvent, TransitionEvent. >> mouseover, mouseout, mouseenter, mouseleave and their pointer* counterparts >> are not yet supported. >> >> *Blink component* >> Blink>CSS >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ECSS%22> >> >> *TAG review* >> *No information provided* >> >> *TAG review status* >> Pending >> >> *Risks* >> *Gecko*: No signal ( >> https://github.com/mozilla/standards-positions/issues/1345) >> >> *WebKit*: No signal ( >> https://github.com/WebKit/standards-positions/issues/607) >> >> *Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, ChromeOS, Android, and Android WebView)?* >> Yes >> >> *Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >> Yes >> >> https://wpt.fyi/css/css-pseudo/events-on-pseudo-element-mutation.tentative.html >> http://wpt.fyi/css/css-pseudo/events-on-pseudo-element.tentative.html >> >> *Tracking bug* >> https://issues.chromium.org/issues/40639103 >> >> *Estimated milestones* >> Shipping on desktop 147 >> Shipping on Android 147 >> Shipping on WebView 147 >> *Link to entry on the Chrome Platform Status* >> https://chromestatus.com/feature/5179328935624704?gate=6529265912905728 >> >> This intent message was generated by Chrome Platform Status >> <https://chromestatus.com/>. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAH3Z92_G%2BNquVjXY1H7fT%3DpYzW8Z4cpDcqOm%3DHdQi9ErhK-u%3DA%40mail.gmail.com >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAH3Z92_G%2BNquVjXY1H7fT%3DpYzW8Z4cpDcqOm%3DHdQi9ErhK-u%3DA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/76f61c77-6f6a-472d-ae42-c2525c760ea2n%40chromium.org.
