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[css-pseudo] Define .selectorText for CSSPseudoElement IDL #13169

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[css-pseudo] Define .selectorText for CSSPseudoElement IDL #13169

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Define .selectorText for CSSPseudoElement IDL 
As resolved in #12161, add .selectorText property to return a
string representing the full, normalized selector text used to select
the pseudo-element.
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@danielsakhapov
danielsakhapov committed Nov 27, 2025
commit 3a82041247cb09a49e351615274ffd9257c8cffd
10 changes: 10 additions & 0 deletions css-pseudo-4/Overview.bs
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Expand Up @@ -1760,6 +1760,7 @@ Additions to the CSS Object Model</h2>
readonly attribute CSSOMString type;
readonly attribute Element element;
readonly attribute (Element or CSSPseudoElement) parent;
readonly attribute CSSOMString selectorText;
CSSPseudoElement? pseudo(CSSOMString type);
};
</pre>
Expand Down Expand Up @@ -1793,6 +1794,15 @@ Additions to the CSS Object Model</h2>
{{CSSPseudoElement/parent}} will return a {{CSSPseudoElement}}
while {{CSSPseudoElement/element}} returns an {{Element}}.

The <dfn attribute for=CSSPseudoElement>selectorText</dfn> attribute
is a string representing the full, normalized selector text
used to select the pseudo-element.
This includes the pseudo-element name and any arguments,
serialized in a form that can round-trip.
For example, <code>"::after"</code> for a ''::after'' pseudo-element,
or <code>"::scroll-button(left)"</code> for a ''::scroll-button()'' pseudo-element
with a <code>left</code> argument.

The <dfn attribute for=CSSPseudoElement>pseudo(type)</dfn> method
returns the {{CSSPseudoElement}} interface
representing the [=sub-pseudo-element=] referenced in its argument,
Expand Down