design-reviews#1233: WG Revision: CSSPseudoElement

Opened

Jun 2, 2026

The WG's request for this TAG review: https://groups.google.com/a/chromium.org/g/blink-dev/c/CB44320ip2E/m/s9JMCrqDBgAJ
A description of what has changed since our previous review: CSSPseudoElement is no longer inheriting from EventTarget, instead it participates in event handling as Event.pseudoTarget which is CSSPseudoElement?

Feature 1:

A description of the problems that end-users were facing before this proposal: no support for pseudo-elements in JS
Examples of how to use the proposal to solve the end-users' problems: https://github.com/danielsakhapov/CSSPseudoElementDoc#use-cases
Web Platform Tests: https://wpt.fyi/css/css-pseudo?q=CSSPseudoElement, https://wpt.fyi/css/css-pseudo?q=events-on

Follows the Web Platform Design Principles.
Includes Security and Privacy Considerations sections based on answers to the Security/Privacy Questionnaire.

GitHub repo: https://github.com/w3c/csswg-drafts/blob/main/css-pseudo-4/Overview.bs
Primary contacts:
- Daniil Sakhapov (@danielsakhapov), Google
Organization/project driving the specification: CSSWG
Primary standards group developing this feature: CSSWG

I'm mostly requesting this review as I was asked in Intent to Ship process here - https://groups.google.com/a/chromium.org/g/blink-dev/c/CB44320ip2E/m/s9JMCrqDBgAJ - not sure if it even needs reviewing or can be just FYI even? PTAL

https://github.com/danielsakhapov/CSSPseudoElementDoc - has links to some open issues on CSSPseudoElement interface

Discussed Jun 8, 2026 (See Github)

Xiaocheng: Brian proposed a comment. I agree with it so we can post it.

Heather: I'll reach out to Brian, we'll go forward with it if he's cool with it.

Discussed Jul 6, 2026 (See Github)

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#1233: WG Revision: CSSPseudoElement