When do we need to use @Injectable for our services in Angular2?

Question

All:

Im pretty new to Angular2, when I get into the dependency injection section, this notation @Injectable()makes me confused. Just want to make sure my understanding of @Injectable () is true:

• @Injectable() indicates that the class follows; it can be entered as a service.
• @Injectable()indicates that the class follows another service @Injectable()entered at.

Is that pretty much what it means @Injectable()? Anything else you need to pay special attention to this designation?

And we cannot decide which case will happen (or both will) until we look at the definition of a class, is this right?

thank

Answer 1

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