Web workers

E242829

Concurrency mechanism Web API Web platform feature

Web workers are a web platform feature that enable running JavaScript in background threads separate from the main UI thread to perform computationally intensive or asynchronous tasks without blocking user interactions.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (3)

Label	Occurrences
Web Workers	8
Web Worker	1
Web workers canonical	1

Statements (47)

Predicate	Object
instanceOf	Concurrency mechanism ⓘ Web API ⓘ Web platform feature ⓘ
benefits	Keeping UI smooth during heavy computation ⓘ Offloading CPU-intensive algorithms ⓘ
canAccess	XMLHttpRequest (with limitations) ⓘ importScripts function ⓘ setInterval ⓘ setTimeout ⓘ
cannotAccess	DOM directly ⓘ document object ⓘ window object ⓘ
communicatesWith	Main thread via message passing ⓘ
createdFrom	External JavaScript file URL ⓘ
createdWith	Worker constructor ⓘ
definedIn	HTML Living Standard ⓘ
improves	Performance of web applications ⓘ Responsiveness of web applications ⓘ
introducedTo	Enable multi-threading in JavaScript ⓘ
lifecycleControlledBy	Main thread ⓘ
partOf	HTML5 specification ⓘ
prevents	Blocking user interactions ⓘ
providedBy	Web browser ⓘ
restrictedBy	Browser security sandbox ⓘ
runsIn	Background thread ⓘ
runsLanguage	JavaScript ⓘ
securityModel	Same-origin policy ⓘ
separateFrom	Main UI thread ⓘ
standardizedBy	W3C (earlier drafts) ⓘ WHATWG ⓘ
supports	Non-blocking computation ⓘ Parallel execution of JavaScript ⓘ
supportsEvent	error ⓘ message ⓘ
supportsType	Dedicated worker ⓘ Service Workers ⓘ surface form: Service worker (conceptually related but separate API) Shared worker ⓘ
terminatedBy	self.close() ⓘ worker.terminate() ⓘ
usedFor	Asynchronous tasks ⓘ Computationally intensive tasks ⓘ Offloading work from main thread ⓘ
usedIn	Data processing in web apps ⓘ Image and video processing in browser ⓘ Real-time data analysis in web applications ⓘ
uses	MessageEvent interface ⓘ postMessage API ⓘ