Do I have to unsubscribe from ActivatedRoute (e.g. params) observables?

Question

I find many examples where ActivatedRoute Observables like params or url are subscribed but not unsubscribed.

construc         


        

Answer 1

From the docs :

When subscribing to an observable in a component, you almost always arrange to unsubscribe when the component is destroyed.

There are a few exceptional observables where this is not necessary. The ActivatedRoute observables are among the exceptions.

The ActivatedRoute and its observables are insulated from the Router itself. The Router destroys a routed component when it is no longer needed and the injected ActivatedRoute dies with it.

Feel free to unsubscribe anyway. It is harmless and never a bad practice.