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Angular Community Meetup | May 23rd, 2023 | Jay Bell, Chau Tran, Markus Ingvarsson, & Stephen Cooper
"Discover the power of dependency injection in Angular, exploring injector creation, host element binding, and built-in tokens, including `provide`, `inject`, and `useValue`, to simplify component creation and management."
- Dependency injection works by creating an injector, instantiating dependencies, and providing them to components.
-
When creating a component, you can use the
_hostattribute to bind the component to a host element. -
Angular provides several ways to provide injection tokens, including the
providerproperty and theinjectorservice. -
The
injectorservice can provide dependencies to components and services. -
Injection tokens can be customized using the
providemethod. -
Angular provides several built-in injection tokens, including
provide,inject, anduseValue. -
The
useValuetoken can be used to provide a value to a component. -
The
injecttoken can be used to inject a dependency into a component. -
The
providetoken can be used to provide a dependency to a component. - Angular services can be used to provide dependencies to components.
- Components can use services to access dependencies.
- Dependency injection can be used to decouple components from dependencies.
- Dependency injection can be used to simplify the process of creating and managing dependencies.
- Dependency injection can be used to improve the flexibility and reusability of components.