What are the three types of Web Workers? How do they differ from each other?

Q: What are the three types of Web Workers? How do they differ from each other?

**Dedicated Worker**: Attached to a single script (one tab). Terminates when the tab closes. **Shared Worker**: Accessible from multiple tabs/windows on the same origin. Requires unique name. **Service Worker**: Runs even when page is closed, intercepts network requests, enables offline capabilities and push notifications.

Difficulty: 5/10

Dedicated Worker, Shared Worker, Service Worker

The three types are Dedicated Workers (single tab), Shared Workers (multiple tabs/same origin), and Service Workers (network proxy/caching).

1
Dedicated Worker: Attached to a single script (one tab). Terminates when the tab closes.
2
Shared Worker: Accessible from multiple tabs/windows on the same origin. Requires unique name.
3
Service Worker: Runs even when page is closed, intercepts network requests, enables offline capabilities and push notifications.

Scenario Questions

0-2 years experience

Follow-up Questions