This is the first article in beginner’s course of Angular. In this article, we are going to discuss a brief introduction to Angular Framework. At the end of this article, we will learn every basic aspect of angular.

What is Angular ?

Angular is a TypeScript-based open-source web application framework developed by Google and by a community of individuals and corporations. But before understanding Angular, lets first have a look at the earlier version of Angular which is popularly known as AngularJS.

AngularJS was released in the year 2010 – it becomes one of the most popular frameworks for developers to develop single-page applications (SPA).  Now you may have one question in your mind i.e. already AngularJS becomes one of the most popular Frameworks for the developers and already so many applications are developed using this AngularJS then why Angular2 or any higher versions come into the market or why we should use Angular2.

Why do we need Angular ?

Let us first discuss why we should use Angular 2 (or any higher versions) or the advantages of using Angular 2 (or any higher versions) to develop web applications.

Angular 2 (or any higher version) is a new but a great framework that will provide us with a great deal of flexibility and power to develop web applications. The most important point that you need to remember is it is completely rewritten from the ground. That means it is not an up-gradation from AngularJS. It is completely rewritten from the ground. It provides lots of new features as well as lots of improvements when compared with the AngularJS.

Performance Improvements in Angular Application: 

The Angular 2 (or higher versions) Framework is five times faster than the Angular JS Framework. The reason for this is, it has faster initial loading, improved a lot on rendering time and provides a great deal of change detection. Angular 2 not only just improve the performance, but it also has improved the Dependency injection mechanism, modularity, and also provides great testability to test the Angular applications. If you are confused at the moment, then don’t worry, we will discuss all these features in greater detail in our upcoming articles. 

Component-Based Development in Angular Application: 

The most important point that you need to keep in mind is that in Angular application everything is a component. That means the components are the basic building blocks of an Angular application. The most important advantage of this component-based development approach is that it provides support for code reusability. That means you can reuse the same component in multiple places. This Component-based development approach also provides great support for unit testing the Angular application.

Angular Provides Mobile Support: 

The earlier versions i.e. AngularJS did not provide built-in support for mobile devices compatibility. That does not mean AngularJS applications are not run on mobile devices. It is possible to run AngularJS applications on mobile devices but to do this we need to use other frameworks along with AngularJS Framework. To keep this in mind, the Angular 2 (higher versions) framework is built from the ground to support mobile device compatibility by default. So if you develop an application using Angular 2 (or any higher versions like 4, 5, 6, 7, 8, 9) framework, then that application can run on both desktops as well as mobile devices.

Angular 2 Support Multiple Languages:

The Angular Framework supports several languages for building Angular applications. Some of the popular languages are as follows

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