Async with Polling

A background model prints to a buffer while the page auto-refreshes until done

What this demonstrates

App + HandleRoot — starts model in a goroutine, redirects to /display
Auto-refresh — injects <meta http-equiv="Refresh"> while polling is active
HandleDisplay — renders template with buffer content + polling state
EndAction() — model signals completion, polling stops

Server-side flow

GET /        → reset buffer, start goroutine, redirect /display
GET /display → render template (auto-refresh while polling)
             → model calls EndAction(), refresh stops

Polling state — partial output visible — During polling — partial output

Complete state — all output rendered — After completion — full output

Live Demo (WASM)

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