Scatter traces have always 3 classnames:trace scatter trace{UID} whereUID is the trace unique ID (trace.uid).
Now bar traces can have it too:trace bars trace{UID}.

Greg Deback added2 commits

January 7, 2025 15:35

Add UID as a classname to bar trace

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alexcjohnson commentedJan 7, 2025

Curious what you want this for? We don’t generally consider DOM structure like this to be part of the public API so in principle it’s subject to change at any time, though in practice it has likely been very stable.

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gregdeback commentedJan 7, 2025

It's because I'm working on a project where we would like the hovered bar series to be highlighted (by changing the opacity of the others). It's easy to retrieve the UID of the hovered trace, so for scatter (& line) traces it's easy to access the<g>roup (usingquerySelector('.trace' + point.uid))... but not for bar traces.
Or maybe there is an easier way to retrieve the<g>roup from the hovered point (or its trace)?

gvwilson changed the title~~Feature: Add UID as a classname to bar trace #7328~~Add UID as a classname to bar trace #7328

Jan 7, 2025

gvwilson added feature

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Jan 7, 2025

archmoj reviewed

Apr 3, 2025

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draftlogs/7328_add.md

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		- Add `trace{UID}` to bar traces as for scatter ones [[#7328](https://github.com/plotly/plotly.js/issues/7328)]

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archmojApr 3, 2025

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Suggested change

	- Add`trace{UID}` to bartraces as for scatter ones[[#7328](https://github.com/plotly/plotly.js/issues/7328)]
	- Add`trace{UID}` to bar, histogram, funnel and waterfalltraces as for scatter ones[[#7328](https://github.com/plotly/plotly.js/issues/7328)],
	with thanks to@gregdeback for the contribution!