Popular social media websites like Facebook, Instagram, Twitter to eCommerce sites like Amazon, Myntra, Flipkart, etc. are all equipped with dynamic features to provide a user-friendly experience. The banking and healthcare industry uses the web and mobile applications to provide services to their customers. Ever wondered how these applications are developed? How do developers create such dynamic user interfaces? If yes, then the answer is Angular.
A Brief Introduction to Angular
Angular has several features like modules, components, templates, services, and dependency injection. In this article, we will discuss Angular Services and their importance.
What are Angular Services?
Angular Services are used to complete a specific task in a web application. They are reusable codes with a focused purpose. They render services to the various components of Angular. Services in Angular perform all the operational tasks of the Angular components. When there is data or business logic that needs to be shared across the angular components, a service class is created. A service class is a TypeScript class with a specified function. It can be written once and then injected into all the components that require that service. They are implemented through dependency injection.
Services in Angular carry a single piece of code that signifies the business logic. This code can then be shared across multiple angular components that use that service. It can be anything for example a variable, a function, or a feature that the web application needs. Components interact with the user, while Services help get back-end support.
Why should we use Services in Angular?
As discussed above, Services in Angular perform the vital function of getting data from the backend server. Writing data access code in each component of angular is very inefficient. Thus, a service class is created to do the specific task.
Here are some of the primary uses of Services in Angular:
- To share business logic or data across multiple components
- For features like logging services that are independent of components
- To contain external interactions like data access
If the business logic is written in components, then it will become very difficult to maintain and cannot be reused anywhere. However, creating a service class will keep the components clean and can be reused again anywhere the business logic is needed to be applied.
Angular services can also be used to establish communication between two separate components. This service logic can be injected into both components to share data back and forth. As Services in Angular are singletons by default, establishing the communication between the two components is possible.
Angular Services are easier to test and debug. They can be used again and again to provide the business logic anywhere it is needed. Thus, they play an important function in the Angular framework. Developers use Angular to create visually appealing as well as functionally efficient user interfaces. And Services in Angular help these developers in achieving that. Angular Developers help their organizations fulfil their customer’s requirements and attain business objectives successfully.