what is diff in @Injectable() and @Inject

陌路散爱 提交于 2021-02-09 09:00:41

问题


I am working on angular2 I have created service and inject those service using @Inject in component. I am confuse with the use of @Injectable() in service itself and what diff it makes.


回答1:


@Inject() is a manual mechanism for letting Angular 2 know that a parameter needs to be injected

@Injectable() lets Angular 2 know that a class can be used with the dependency injector. @Injectable() is not strictly required if the class has other Angular 2 decorators on it. What is important is that any class that is going to be injected with Angular 2 is decorated.

However best practice is to decorate injectables with @Injectable(), as it is makes more sense to the reader.



来源:https://stackoverflow.com/questions/37939978/what-is-diff-in-injectable-and-inject

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