What are the main features in angular 2 ?

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 Angular 2 brought significant improvements and features over its predecessor, AngularJS. Here are the main features of Angular 2:

1. Component-Based Architecture

  • Angular 2 is built around a component-based architecture, allowing developers to create encapsulated components that manage their own view and logic. This promotes reusability and maintainability.

2. TypeScript

  • Angular 2 is written in TypeScript, a superset of JavaScript that adds static typing. This enhances code quality, provides better tooling (like IntelliSense), and makes the code more maintainable.

3. Improved Dependency Injection

  • Angular 2 features a more powerful and flexible dependency injection system that allows for better management of service instances, making it easier to manage dependencies within components.

4. Enhanced Performance

  • Angular 2 was designed with performance in mind. Features like ahead-of-time (AOT) compilation, tree shaking, and improved change detection lead to faster rendering and improved application performance.

5. Directives and Pipes

  • Directives in Angular 2 have been simplified, with component directives and attribute directives being easier to implement. Pipes allow for data transformation in templates, enabling data formatting (like currency or date) directly in the view.

6. Routing

  • Angular 2 includes a powerful routing module that allows for navigation between different views and facilitates the development of single-page applications (SPAs). It supports lazy loading and guards for better control over route access.

7. Reactive Programming with RxJS

  • Angular 2 integrates RxJS, a library for reactive programming using observables. This enables developers to manage asynchronous data streams and improve handling of events and data changes.

8. Forms Management

  • Angular 2 offers robust form handling capabilities, including reactive forms and template-driven forms. This makes it easier to manage user input and validation.

9. Internationalization (i18n)

  • Angular 2 supports internationalization, making it easier to create applications that can be adapted for different languages and cultures.

10. Testing Support

  • Angular 2 has a strong focus on testability, making it easier to write unit tests and end-to-end tests. The framework provides tools and best practices for testing components and services.

Conclusion

Angular 2 introduced a range of features that significantly enhance the development experience, focusing on performance, maintainability, and modularity. These features have laid the foundation for subsequent versions of Angular, making it a powerful framework for building modern web applications.

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