Clone into all descendant selectedcontent elements#12263
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josepharhar wants to merge 15 commits intowhatwg:mainfrom
Open
Clone into all descendant selectedcontent elements#12263josepharhar wants to merge 15 commits intowhatwg:mainfrom
josepharhar wants to merge 15 commits intowhatwg:mainfrom
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This PR improves the "clear a select's non-primary selectedcontent elements" algorithm by making it create a list of selectedcontent elements to modify separately from modifying them in order to prevent the list of elements to change while iterating. Fixes whatwg#11880
This PR makes sure that the contents of the selectedcontent element stay up to date when the selected option is changed in the selectedness setting algorithm. This issue was found here: web-platform-tests/wpt#55849 (comment)
In order to make the selectedness setting algorithm match implementations, this PR makes the selectedness setting algorithm avoid changing the selectedness of option elements which haven't ran their insertion steps yet by checking whether the options have their cached nearest ancestor select element assigned yet or not. This was discussed here: whatwg#11825
…electedcontentredo
…contentredo Merged the PRs, now I need to do the selectedcontent rewrite to clone into all descendant selectedcontent elements.
This was referenced Mar 16, 2026
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This PR changes several things:
Fixes #12096
Fixes #11880
Fixes #11883
Fixes #11825
(See WHATWG Working Mode: Changes for more details.)
/form-elements.html ( diff )