Angular 4 Features

Angular 4 was a minor release from Angular 2, and it introduced several new features and improvements to the framework. Some of the notable features of Angular 4 include:

1. Improved size and performance: Angular 4 introduced several changes to reduce the size of the generated code and improve the performance of applications, especially for mobile devices.
2. Animation improvements: Angular 4 introduced new animation-related features and improvements, making it easier to add animations to an application.
3. New HTTP client: Angular 4 introduced a new and improved HTTP client, which is smaller and easier to use than the previous HTTP client.
4. Improved *ngIf and *ngFor: Angular 4 introduced improvements to the *ngIf and *ngFor structural directives, making them faster and easier to use.
5. Improved AOT compiler: Angular 4 introduced improvements to the ahead-of-time (AOT) compiler, which makes it faster and more efficient.
6. TypeScript 2.1 and 2.2 compatibility: Angular 4 is compatible with the latest versions of TypeScript, allowing developers to take advantage of new language features and improvements.
7. Enhanced *ngFor and *ngIf: Angular 4 introduced improved and more efficient versions of the *ngFor and *ngIf structural directives.
8. Dynamic Components with *ngComponentOutlet: Angular 4 introduced a new directive called *ngComponentOutlet, which makes it easier to dynamically load components in an application.
9. Improved Internationalization (i18n): Angular 4 introduced improvements to the internationalization (i18n) support, making it easier to build applications that can be localized for different languages and cultures.