AngularJS vs Angular2 | Features and Comparison

AngularJS: It is a front-end dynamic JavaScript framework, used for developing ‘Single Page Applications’. AngularJS is managed by Google and is open-source. This means that it is open for contribution by developers around the globe. Due to this, there is a lot of material online available for free, to learn the technology. After its launch, AngularJS quickly became popular. This is because of the large set of functionalities it provided to the developers, like data binding, easier event handling, etc.

Angular 2: It is built on the ‘Typescript’. Typescript is an open-source programming language, managed by Microsoft. Angular 2 is completely different from AngularJS. AngularJS had features like controllers, $scope, $scope variables, etc. However, in Angular 2, these features were replaced by new features namely components and directives.

AngularJS Features:



  • MVC Framework: The ‘Model View Control’ architecture of AngularJS is dynamic in nature. ‘Model’ covers the data and logic part of the application, ‘View’ covers the aesthetics of the app, whereas ‘Controller’ connects these two, and enables the application to function together as a whole. Thus, all the components are built separately and then are combined later.
  • User Interface: AngularJS used basic HTML tags to create user interface.
  • Code Less, Do More: The biggest advantage of using AngularJS is that fewer lines of code are required to create the same functionality with AngularJS than with other libraries like jQuery. Data binding is the major factor behind this.
  • Filter: It helps in creating a pagination system, and in filtering the data array with respect to the given parameters. For example, suppose there is a data array that contains all the natural numbers less 5 i.e [1, 2, 3, 4, 5].
    Now suppose a filter is applied that allows only numbers less than 4 to be added to the resultant array. Therefore, the resultant array will be [1, 2, 3]. This is possible by using the AngularJS filters.
  • Expressions: The AngularJS expressions are written inside two curly braces. {{expression}}. These are useful in two way data binding.
  • Two-way data binding: This helps in creating synchronization between the model and the view. The changes made in the model gets instantly reflected in the view, and the changes in the view get instantly reflected in the models. This is useful in creating SPAs.

Angular 2 Features:

  • Mobile Development: Angular 2 is helpful in developing reponsive mobile applications.
  • Performance: The loading time of the application has reduced. Dynamic loading feature helps in reducing the load time.
  • Routing: Features like location service and navigational model has improved the routing service in Angular 2.
  • Cross-platform: Angular 2 applications can be run on all the devices and platforms like Android, iOS, Windows, etc.
  • Browser Support: Angular 2 supports almost all modern browsers like Google Chrome, Safari, Edge, etc.

AngularJS vs Angular 2: Comparison between AngularJS and Angular 2.

Factor Angular JS Angular 2
Language Written in JavaScript. Written in TypeScript(a superset of Javascript).
Routing $routeprovider.when() is used for routing configuration. @RouteConfig{} is used for routing.
Architecture Uses MVC architecture to build the applications. Uses component based UI to build the applications.
Mobile Support AngularJS does not support mobiles. Angular 2 was developed specifically to cater to the mobile users.
Complications It is easier to learn. However, the application starts to lag once the number of users at a time gets higher than 200. It is inefficient for creating small applications, as setting up the Angular 2 development environment is difficult.
Syntax Syntax is complicated to learn. Syntax is comparatively easier than AngularJS.
Plugin Additional plugins are not required for developement. Angular 2 require additional plugins for development.


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