Operators

A complete list of RxJS operators with clear explanations, relevant resources, and executable examples.

Prefer a complete list in alphabetical order?

Contents (By Operator Type)

• Combination

  • combineAll

  • combineLatest ⭐

  • concat ⭐

  • concatAll

  • endWith

  • forkJoin

  • merge ⭐

  • mergeAll

  • pairwise

  • race

  • startWith ⭐

  • withLatestFrom ⭐

  • zip

• Conditional

  • defaultIfEmpty

  • every

  • iif

  • sequenceequal

• Creation

  • ajax ⭐

  • create

  • defer

  • empty

  • from ⭐

  • fromEvent

  • generate

  • interval

  • of ⭐

  • range

  • throw

  • timer

• Error Handling

  • catch / catchError ⭐

  • retry

  • retryWhen

• Filtering

  • audit

  • auditTime

  • debounce

  • debounceTime ⭐

  • distinct

  • distinctUntilChanged ⭐

  • distinctUntilKeyChanged

  • filter ⭐

  • find

  • first

  • ignoreElements

  • last

  • sample

  • single

  • skip

  • skipUntil

  • skipWhile

  • take ⭐

  • takeLast

  • takeUntil ⭐

  • takeWhile

  • throttle

  • throttleTime

• Multicasting

  • multicast

  • publish

  • share ⭐

  • shareReplay ⭐

• Transformation

  • buffer

  • bufferCount

  • bufferTime ⭐

  • bufferToggle

  • bufferWhen

  • concatMap ⭐

  • concatMapTo

  • expand

  • exhaustMap

  • groupBy

  • map ⭐

  • mapTo

  • mergeMap / flatMap ⭐

  • mergeScan

  • partition

  • pluck

  • reduce

  • scan ⭐

  • switchMap ⭐

  • switchMapTo

  • toArray

  • window

  • windowCount

  • windowTime

  • windowToggle

  • windowWhen

• Utility

  • tap / do ⭐

  • delay

  • delayWhen

  • dematerialize

  • finalize / finally

  • let

  • repeat

  • repeatWhen

  • timeInterval

  • timeout

  • timeoutWith

  • toPromise

⭐ - commonly used

Additional Resources

• What Are Operators? 📰 - Official Docs
• What Operators Are 🎥 💵 - André Staltz