Build a nested table of contents from the headings inside a content region
and render it as a list of anchor links, replacing the nav's placeholder
content (which is restored on destroy). With scrollSpy enabled, the entry
for the heading currently in view is marked with aria-current. Call
refresh() on the returned API after the content changes.
Build a nested table of contents from the headings inside a content region and render it as a list of anchor links, replacing the nav's placeholder content (which is restored on destroy). With
scrollSpyenabled, the entry for the heading currently in view is marked witharia-current. Callrefresh()on the returned API after the content changes.