UX research resources including W3C and Nielsen and examples for accessible ui controls

 


Nielsen Norman Group is a good resource for UX research articles

e.g. SplitButton guidance


Bootstraps split button implementation: https://getbootstrap.com/docs/5.2/components/dropdowns/#split-button

  • notice the html

Material UI is another good resouce for UX and compoents. Here's their Accordion implementation


For web accessibility the W3C has good guides:

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