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@ -143,7 +143,7 @@ Learn more about [where to configure providers](guide/hierarchical-dependency-in
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## Injecting services
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## Injecting services
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In order for `HeroListComponent` to get heroes from `HeroService`, it needs to ask for `HeroService` to be injected, rather than creating it's own `HeroService` instance with `new`.
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In order for `HeroListComponent` to get heroes from `HeroService`, it needs to ask for `HeroService` to be injected, rather than creating its own `HeroService` instance with `new`.
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You can tell Angular to inject a dependency in a component's constructor by specifying a **constructor parameter with the dependency type**. Here's the `HeroListComponent` constructor, asking for the `HeroService` to be injected.
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You can tell Angular to inject a dependency in a component's constructor by specifying a **constructor parameter with the dependency type**. Here's the `HeroListComponent` constructor, asking for the `HeroService` to be injected.
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