- Any uninterrupted period where the main thread is busy for 50 ms or longer. Common examples include long running event handlers, expensive reflows and other re-renders, and work the browser does between different turns of the event loop. ← MDN Web Docs ↑ w3c.github.io/longtasks
- Related terms: Main thread, Event loop, Time to Interactive, Long-Term Support
- Previous term: Long polling
- Next term: Long-Term Support
- Random term: Service-oriented architecture (webglossary.info/random 🎲)