@Thain @firefoxwebdevs yeah `<select multiple size=1>` is still being worked on, but hopefully soon. Then even stuff like filtering is still being thought about. Hopefully without any JS we can manage the common scenarios.
lukew@toot.wales
Posts
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? -
If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?@Thain @firefoxwebdevs nice thing with this is that you can build a custom dropdown multiselect yourself. It'll need JS and the accessibility handling correctly but it's doable now, without you needing to recreate the listbox itself. I suspect that's what most people will end up doing anyway for full control of the design. e.g. an input in the picker for filtering.
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?@Thain @firefoxwebdevs fwiw Chrome 145 has listbox multiple and it's in the spec too! So hopefully Firefox and WebKit can do this alongside the dropdown single select version (though it's quite a large undertaking overall due to history)

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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?@Thain @firefoxwebdevs listbox or drop-down out of interest?
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?@firefoxwebdevs the CloseWatcher API (I guess maybe implicitly we get that from closedby?).
field-sizing: content would be a nice win too.