[Solved] How can you ensure cleanup of a subscription created in ngOnInit to avoid memory leaks in Angular? — Ans: Unsubscribe inside ngOnDestroy lifecycle hook | Angular

Angular - Components

How can you ensure cleanup of a subscription created in ngOnInit to avoid memory leaks in Angular?

ANo need to unsubscribe if using ngOnInit

BUnsubscribe inside ngOnInit lifecycle hook

CUnsubscribe inside constructor

DUnsubscribe inside ngOnDestroy lifecycle hook

Step-by-Step Solution

Solution:

Step 1: Identify when to clean subscriptions
Subscriptions should be cleaned when the component is destroyed to avoid leaks.
Step 2: Use ngOnDestroy for cleanup
ngOnDestroy is the lifecycle hook designed for cleanup tasks like unsubscribing.
Final Answer:
Unsubscribe inside ngOnDestroy lifecycle hook -> Option D
Quick Check:
Cleanup subscriptions in ngOnDestroy [OK]

Quick Trick: Unsubscribe in ngOnDestroy to prevent leaks [OK]

Common Mistakes:

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How can you ensure cleanup of a subscription created in ngOnInit to avoid memory leaks in Angular?