Where you add the service defines the scope of the service.
`bootstrap(AppComponent, [SomeProviders])` makes them shared globally.
@Component({
...
providers: [SomeProviders],
...
})
export class SomeComponent {}
make them shared between SomeComponent and all descendant components and
directives, this also shadows the same provider listed on ancestors or
bootstrap.
On Thursday, March 31, 2016 at 9:26:44 AM UTC+2, Christophe HOARAU wrote:
>
> Hello,
>
> I'm still quite new to angular2, and I have a question about DI injection
> on components.
> Component has a providers attribute in order to allow DI of services, but
> I have seen most of the time this is not used at all and the Services are
> injected in the boostrap. I would like to understand why, and what is the
> difference?
>
> Let's say I have 2 "standalone" components that requires the same service.
> If I set the providers attribute will this create 2 services ?
>
> Thanks.
>
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