Lesson 03 · 11 min
Services and DI
HTTP and shared state don't live in every component. They go into a service.
11 minLesson 3 of 8Practice includedAsk AI on any point
A service is an ordinary class with @Injectable({ providedIn: "root" }). Angular creates one instance and puts it wherever you ask for it in a constructor. A component doesn't do new UserApi(): it writes constructor(private api: UserApi) and gets a ready object.
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