UI State Machine & Status

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

API demo Shared Worker state tabs

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

Developer Tools debug PWA Service Worker state

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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

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

Developer Tools AudioContext autoplay debug state

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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