Hash-fragment state

The chosen view, filter and sort live in the URL fragment. The back button moves between them without a navigation or a request, which is the case that breaks crawlers assuming a URL change means a new document. SAMPLE content only.

Filter (also kept in the fragment)

Alpha SAMPLE
Bravo SAMPLE
Charlie SAMPLE
Delta SAMPLE
Echo SAMPLE

The fragment is the only place this state lives. Press the back button and the view changes with no request and no document load.