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Groups > alt.comp.software.seamonkey > #8209

Re: CSS selector :has() support

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On 07/12/2025 15:25, Yuchan Seo wrote:
> Hello. It seems like SeaMonkey doesn't have support for the :has() CSS
> selector, probably because it's still based on an older version of
> Gecko. Is there a good alternative that I can use to replace :has() on
> my own CSS to provide compatibility for SeaMonkey? Or, would this
> feature be available some time soon?

You'd have to avoid :has() for now and/or study the results of a web
search for "CSS has polyfill" (basically, have a JS observer that works
out the whether the has(...) is true when the DOM changes and modifies
the style of the affected element(s)).

Devs may have a view as to the likelihood and timescale of an
implementation of has(). My guess would be that, since it's a feature
with tentacles in several key functional elements of the browser, a
back-port from FF, where it was fully supported 2 years ago, or other
implementation could be hard and slow.

/df

-- 
London
UK

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CSS selector :has() support Yuchan Seo <hexagonwin@disroot.org> - 2025-12-08 00:25 +0900
  Re: CSS selector :has() support Dirk Fieldhouse <surname@gmx.net.removethisandtherest.example.invalid> - 2025-12-08 15:26 +0000

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