demo · v135

Inertness tree walker

A live DOM walker shows which buttons in a nested layer tree are currently inert. Toggle interactivity: inert on any branch and the walker re-marks every descendant in red — mirroring exactly what the focus ring and click handlers experience. The walker uses checkVisibility({ checkInert: true }) from the same milestone family to compute its verdict.

interactivity: ?

walker output

Try Tab/Shift+Tab to walk focus through the tree — the inert branches will be skipped.

see also