Description:
Angular services are a fundamental building block used to share Data Component Level or business logic, data, and functionality across multiple components in an Angular application. Instead of duplicating code inside each component, services allow you to define common logic once and inject it wherever needed using Angular's powerful Dependency Injection (DI) system.
Services are ideal for handling:
- HTTP requests (API calls)
- Form validations
- Authentication and authorization
- Reusable functions
- Shared state between components
1. What is an Angular Service and Why Use It?
An essential component of Angular apps is Angular services. They are often used to group together features like data retrieval, manipulation, and storage that can be used by several components.
Moreover, services can be utilised to carry out calculations, implement business logic, and communicate with external APIs.
They can be injected into components or other services using the dependency injection system because they are declared as classes in Angular.
In order to maintain consistency and avoid memory leaks, Angular services are singletons which means that there is only one instance of service throughout the entire application
2.Creating Services
3. Define the service class
Open up the my-service.service.ts file that was created in the previous step. The file will contain a basic class definition for the service. We need to add our own methods and properties to this class to define the functionality of our service. Here's an example of a simple service class:
In this example, we have defined a service called MyService. It has a private property data, which is an array of strings, and two methods: getData() and addData(). The getData() method simply returns the data property, while the addData() method adds a new string to the data array.
4.Import the service into a component
To use the service file in a component, we need to import it using Angular’s dependency injection system. Open up a component file, such as app.component.ts, and add the following code:
Advantages of Using Services:
- Promotes DRY (Don't Repeat Yourself) principle
- Enhances modular architecture
- Easy to unit test
- Supports centralized data and state management
- Encourages separation of concerns
"This Content Sponsored by Buymote Shopping app
BuyMote E-Shopping Application is One of the Online Shopping App
Now Available on Play Store & App Store (Buymote E-Shopping)
Click Below Link and Install Application: https://buymote.shop/links/0f5993744a9213079a6b53e8
Sponsor Content: #buymote #buymoteeshopping #buymoteonline #buymoteshopping #buymoteapplication"