What are the best practices for using Angular lifecycle hooks?

What are the best practices for using Angular lifecycle hooks?

When using Angular lifecycle hooks, it's important to keep your code clean and efficient. Some best practices include: 1. Use ngOnInit for initialization logic, 2. Avoid heavy computations in ngOnChanges, 3. Clean up subscriptions in ngOnDestroy, and 4. Use ngDoCheck sparingly.

Can you explain why it's important to clean up subscriptions?

Cleaning up subscriptions in ngOnDestroy is crucial to prevent memory leaks. If you don't unsubscribe, your component may continue to listen for events even after it's destroyed, leading to unnecessary resource usage.

What happens if I forget to unsubscribe?

Forgetting to unsubscribe can lead to memory leaks, which may cause your application to slow down or crash over time. It can also lead to unexpected behavior as the component may still react to events.

Are there any tools to help manage subscriptions?

Yes, you can use libraries like rxjs with operators like takeUntil or async pipe in templates to manage subscriptions more effectively.