A service in Angular is a class that provides a specific set of functionality to other components in an application. Services can be used to share data and logic across multiple components.
Dependency Injection (DI) is a software design pattern in which components are given their dependencies instead of hard coding them within the component. In Angular, the DI system provides components with the services they need.
Here’s how you can create and use a service in Angular:
Create a service using the Angular CLI:
In your service file, define the logic you want to share:
In this example, the MyService class provides a getData method that returns some data.
In your component, import the service and add it to the constructor to use it:
In this example, the component uses the MyService to get the data and display it in the template.
By injecting the service into the component’s constructor, Angular knows to create a single instance of the MyService and reuse it throughout the application. This way, you can share data and logic between multiple components using a single instance of the service.
