Here are the valid roles based on HTML 5.2…
- alert
- alertdialog
- application
- article
- banner
- button
- cell
- checkbox
- columnheader
- combobox
- complementary
- contentinfo
- definition
- dialog
- directory
- document
- feed
- figure
- form
- grid
- gridcell
- group
- heading
- img
- link
- list
- listbox
- listitem
- log
- main
- marquee
- math
- menu
- menubar
- menuitem
- menuitemcheckbox
- menuitemradio
- navigation
- none
- note
- option
- presentation
- progressbar
- radio
- radiogroup
- region
- row
- rowgroup
- rowheader
- scrollbar
- search
- searchbox
- separator
- slider
- spinbutton
- status
- switch
- tab
- table
- tablist
- tabpanel
- term
- textbox
- timer
- toolbar
- tooltip
- tree
- treegrid
- treeitem