UI State Machine & Status

See the current Service Worker registration, its state, and scope. Send 'skipWaiting' and update. PWA debug.

Developer Tools debug PWA Service Worker state

Select a state and year to see all public holidays. Works offline with built-in data. Plan your long weekends. Simple reference tool.

Date & Time Australia checker public holidays state

Set up a Shared Worker that shares state across multiple browser tabs. Counter and messaging demo. Advanced web.

API demo Shared Worker state tabs

See the current AudioContext state (suspended, running). Resume it with a button. Understand autoplay policies.

Developer Tools AudioContext autoplay debug state

Create promises that resolve or reject after a delay. See state changes and chain .then/.catch. Debug async code.

Developer Tools async JavaScript Promise state

Tag: UI State Machine & Status