Definition
HTMX is a hypermedia approach where HTML attributes drive AJAX/WebSocket updates — server returns HTML fragments instead of a heavy client SPA or WASM UI.
Key Points
- topcoat adopts an HTMX-/Hotwire-like model: server-rendered HTML + “reactive instructions” metadata
- Contrasts with WASM frameworks that ship large client bundles
- Fits fullstack-web productivity for server-centric apps