@Injectable and Dependency Injection

  @Injectable allows you to define a class as a service that can be injected into other components or services.


Synopsis:

  In this topic, you will learn to use @Injectable and dependency injection in Angular.

  • 1. @Injectable:

      Defines a class as a service that can be injected.

  • 2. Dependency Injection:

      Allows injecting dependencies into components and services.


Purpose:


  • Facilitate code reuse.
  • Improve code maintainability.
  • Facilitate unit testing.

Exercises


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What does the @Injectable decorator allow in Angular?