What are the best practices for using async pipe in Angular?

What are the best practices for using async pipe in Angular?

Using async pipe in Angular helps manage subscriptions automatically. Here are some best practices: 1. Use it in templates to avoid manual subscription management. 2. Ensure your observable emits values correctly. 3. Combine it with the *ngIf directive to handle loading states.

Can you explain how to handle loading states with async pipe?

Certainly! You can use *ngIf to check if the observable has emitted a value. For example: <div *ngIf="data$ | async as data; else loading">{{ data }}</div><ng-template #loading>Loading...</ng-template>.

What should I do if my observable doesn't emit any values?

If your observable doesn't emit values, ensure that the source observable is correctly set up. You might also want to use operators like startWith to provide an initial value.

Are there any performance considerations I should be aware of?

Yes, avoid using async pipe in large lists or complex components where performance might be impacted. Consider using ChangeDetectionStrategy.OnPush for better performance.