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Which Angular class is primarily used to create a new observable?

easy🧠 Conceptual Q1 of 15
Angular - RxJS and Observables Fundamentals
Which Angular class is primarily used to create a new observable?
AObservable
BSubject
CEventEmitter
DPromise
Step-by-Step Solution
Solution:

  1. Step 1: Identify the class for observables

    Angular uses the Observable class from RxJS to create observables.

  2. Step 2: Differentiate from other classes

    Subject and EventEmitter are related but not the primary class for creating observables. Promise is different from observables.

  3. Final Answer:

    Observable -> Option A

  4. Quick Check:

    Angular observable creation = Observable [OK]
Quick Trick: Use Observable class to create observables in Angular [OK]
Common Mistakes:
MISTAKES
  • Confusing Subject with Observable
  • Using Promise instead of Observable
  • Thinking EventEmitter creates observables

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