AngularJS Vs Angular

 

AngularJS is an open-source JavaScript framework provided by Google for developing front end single page applications. The later versions of AngularJS are numbered as Angular 2 and so on.

In this blog, I will explain you the differences between AngularJS and Angular and when to use either of them based on the scenarios.

                                

Let’s look at the differences between AngularJS and Angular one by one based on some parameters –

 

1) Architecture

AngularJS is built on the MVC or Model View Controller architecture. We put the business logic inside the model, the request is handled by the controller, and the processed data is  used to derive the output on the view.

On the other hand, Angular is made up of components and directives. Components are special kind if directives with a predefined template (HTML) and a styling class (CSS). With Angular, it is much easier to create and maintain larger and complex applications.

 

2) Angular CLI

Angular 2 onwards have a command-line interface, in short known as Angular CLI. It is used, if you need to generate new components, services, modules, etc. It automatically adds all the references as well in your Angular application of the newly created component/service/module. It supports special features such as dynamic type checking, linting, etc.

On the other hand, AngularJS does not have a CLI of its own.

 

3) TypeScript

AngularJS internally uses JavaScript, but Angular 2 and later versions make use of TypeScript. TypeScript is the superset of JavaScript and provides all the features which are present in JavaScript. It also has a feature of static typing when we are in the development process of our Angular application. This features not just improves performance of the application but avoids many runtime issues or errors.

On the other hand,  absence of these features in AngularJS makes it difficult to use for building larger and complex applications.

 

4) Dependency Injection (DI)

Both AngularJS and Angular involve the concept of dependency injection. However, the way they both implement dependency injection is completely different.

In AngularJS, dependency injection is achieved through link functions, controller functions, and directive. On the other hand, in Angular,  dependency injection is achieved using declarations, constructor functions, and providers.

 

5) Expression Syntax

When we look at the syntax for the data binding, Angular is more flexible when compared to AngularJS.

In an AngularJS application, a developer has to remember the correct ng directive for binding a property or an event. Whereas, in the case of Angular, we use () for event binding and [] for property binding respectively.

 

6) Performance

When we look at from performance perspective, Angular is much faster than AngularJS.

It is a known fact that Angular applications can be up to five times faster than AngularJS applications.

 

7) Mobile Support

The AngularJS application does not support the mobile development, but if we build an Angular application, it does have the support for mobile development.

When to choose Angular and when to choose AngularJS?

If we see the above differences between Angular and AngularJS, then we can definitely say that choosing Angular over AngularJS makes sense. However, with the rapid development and the new Angular versions coming up in the market from Google, it involves a learning curve in order to use Angular. If you want to create a simple and a less complex application, go for AngularJS. But if you want to develop complex applications that should be easy to maintain and scale, then go for Angular.

I hope you might have got an understanding regarding differences between AngularJS and Angular and when to use which.