Kursinnehåll
Introduction to Angular
Introduction to Angular
Introduction to Angular Services
In modern web application development, where code needs to be clean, reusable, and easy to maintain, services in Angular play a crucial role.
Angular is built on the principles of modularity and separation of concerns, and services are the primary way to move business logic out of components and into dedicated classes.
A service is simply a class that contains logic unrelated to the UI. Its main purpose is to organize and provide functionality that can be used across different parts of the application.
Instead of repeating the same logic in multiple components—like a method to load data from a server — we place that logic in a service and reuse it wherever it's needed.
Why Are Services Used?
Why Keep Logic Out of Components?
Services are used because Angular components should focus only on displaying data and handling user interaction. If all the logic is written inside the component, it will quickly become overloaded, hard to understand, and difficult to test.
Also, logic contained within a component cannot be reused in other parts of the application.
Services solve this problem by allowing common functionality to be moved into separate classes that can be easily injected into any component, keeping the code clean, organized, and reusable.
1. What are services most commonly used for in Angular?
2. Why shouldn't components contain business logic?
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