[Solved] What is wrong with this Angular code using an observable? const obs = new Observable(subscriber => { subscriber.next(1); }); obs.next(2); | Angular

Angular - Signals

What is wrong with this Angular code using an observable?

const obs = new Observable(subscriber => {
  subscriber.next(1);
});
obs.next(2);

AObservables do not have a next() method on the instance.

BObservable must be created with signal() instead.

CSubscriber function cannot call next().

DObservable must be subscribed before calling next().

Step-by-Step Solution

Solution:

Step 1: Understand Observable instance methods
Observable instances do not have a next() method; next() is called on the subscriber inside the constructor.
Step 2: Identify misuse of next() outside subscriber
Calling obs.next(2) is invalid and causes an error.
Final Answer:
Observables do not have a next() method on the instance. -> Option A
Quick Check:
next() is on subscriber, not observable instance [OK]

Quick Trick: next() is called inside subscriber, not on observable [OK]

Common Mistakes:

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