Angular – Definition and meaning
What is Angular? Find out what Angular is and how it is used. Get the basic information about Angular in our lexicon.
What is Angular?
Angular is an advanced web application development framework developed and maintained by Google. It is based on TypeScript and enables developers to create powerful, scalable and maintainable applications. Angular is particularly known for its modular architecture, which makes it easier for developers to manage complex user interfaces and create reusable components.
The way Angular works
Angular works according to the principle of component-based development. Here, the application is divided into different, independently functioning components that encapsulate both the code and the layout of an application. Each component consists of a template (), a class (TypeScript) and styles(CSS), which improves reusability and testability.
Important features of Angular
- Two-way data binding: Changes to the user interface are immediately reflected in the application's data logic and vice versa.
- Dependency Injection: Angular promotes development through dependency injection, which leads to less coupling and better testability.
- Routing: With the Angular router, developers can easily design different views of the application without reloading the page.
- Pipes: Pipes are a convenient way to dynamically format and display data.
Why use Angular?
Choosing Angular as the framework for your application offers numerous advantages:
- Efficient development thanks to the modular system.
- Strong community and extensive documentation.
- Regular updates and support from Google.
- Perfectly suited for single-page applications (SPAs).
Frequently asked questions about Angular
What is the difference between Angular and AngularJS?
AngularJS is the original version of the framework, while Angular is the newer, revised version. Angular offers enhanced features, better performance through optimised rendering techniques and improved support for mobile applications.
How do I get started with Angular?
To get started with Angular, you should first read the official documentation and install the Angular CLI (Command Line Interface). This makes it much easier to create and manage Angular projects.
Illustrative example on the topic: Angular
Imagine you want to develop a simple to-do list. With Angular, you can divide this application into different components:
- ToDoComponent: Display of the individual tasks
- ToDoListComponent: Management of all tasks and their logic
- AddToDoComponent: Input field for adding new tasks
Component-based development allows you to organise development more efficiently. In the to-do list, the AddToDoComponent could transfer data to the ToDoListComponent, which then updates the tasks. Thanks to two-way data binding, the user interface is always kept up to date without you having to manually update the DOM.
Conclusion
Angular is a powerful framework that has grown and improved continuously since its introduction. With its modular architecture, advanced features and strong community, it has become a favourite choice for developers looking to create robust and sophisticated web applications. If you want to learn more about related topics, take a look at our article on frameworks or TypeScript.
Frequently asked questions
Angular offers numerous advantages that set it apart from other frameworks. These include its modular architecture, which enables developers to structure complex applications efficiently, as well as support for two-way data binding, which ensures seamless synchronisation between data and the user interface. Angular also offers a strong community and regular updates from Google, which ensures the long-term support and further development of the framework.
Routing in Angular is made possible by the Angular router, which allows developers to create different views within an application without reloading the page. The router manages navigation between these views and allows parameters to be passed and data to be loaded, significantly improving the user experience. The routing functions can also be used to implement protected routes and lazy loading to optimise performance.
Dependency injection is a central concept in Angular that facilitates the development of applications by managing the dependencies between different components and services. By using dependency injection, the code becomes more modular and testable, as components do not have to be instantiated directly, but their dependencies are provided by Angular. This promotes loose coupling and improves the maintainability of the application.
Angular applications are usually tested using frameworks such as Jasmine and Karma. Angular offers an integrated test environment that enables developers to write unit tests for components, services and pipes. By testing the application, errors can be recognised at an early stage and the quality of the code can be ensured. Angular also supports end-to-end testing with Protractor to test the entire application from the user's perspective.
Angular is mainly used for the development of single-page applications (SPAs) that offer a dynamic user experience. It is ideal for applications that require fast interaction and updating of content, such as dashboards, e-commerce websites and social networks. The modular architecture and support for reusable components make Angular an ideal choice for complex, scalable web applications.
The most important features of Angular include two-way data binding, which enables automatic synchronisation between data and the user interface, and dependency injection, which improves the modularity and testability of applications. Other notable features include routing for navigation between different views, pipes for dynamic data formatting and support for reactive forms, which offer flexible handling of forms.
To get started with Angular, you should review the official documentation on the Angular website, which provides a comprehensive introduction and tutorials. The next step is to install the Angular CLI, which helps you to create and manage projects. Once set up, you can generate a new project and start developing your first application, utilising Angular's modular components and powerful features.