Bird
0
0

Which is the correct syntax to subscribe to an observable named data$ in Angular?

easy📝 Syntax Q12 of 15
Angular - RxJS and Observables Fundamentals
Which is the correct syntax to subscribe to an observable named data$ in Angular?
Adata$.subscribe(value => console.log(value));
Bdata$.subscribe = value => console.log(value);
Csubscribe(data$ => console.log(data$));
Ddata$.subscribe(console.log());
Step-by-Step Solution
Solution:
  1. Step 1: Identify correct subscribe method usage

    The subscribe method is called on the observable with a callback function.
  2. Step 2: Check syntax correctness

    data$.subscribe(value => console.log(value)); correctly calls data$.subscribe with an arrow function receiving the emitted value.
  3. Final Answer:

    data$.subscribe(value => console.log(value)); -> Option A
  4. Quick Check:

    Correct subscribe syntax = data$.subscribe(value => console.log(value)); [OK]
Quick Trick: Use observable.subscribe(callback) to listen [OK]
Common Mistakes:
MISTAKES
  • Assigning subscribe instead of calling it
  • Calling subscribe as a standalone function
  • Calling console.log() prematurely

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Angular Quizzes