Angular vs Angular JS

The Differences Between Angular vs AngularJS

The Differences Between Angular vs AngularJS

Though they might sound alike, AngularJS and Angular are very much different. AngularJS is a front-end javascript framework mainly used for Developing Single Page Applications developed by Google and released in 2010. Angular on the other hand is a general web application framework that is built by the same team which originally developed AngularJS.

It is completely built from the ground up and was released in 2016. From 2018, AngularJS entered a Long term development mode which ends in 2022. There is a heavy competition between angular vs Angularjs whether which is the best one and what to use.

So, here in this article, let us understand the differences between them and try to answer the question AngularJS vs Angular which to learn?. We provide Angularjs training in Pune that provides you with much-needed skill on AngularJs.

Differences between AngularJS and Angular


A major difference between angular vs angularjs is about architecture. AngularJS supports MVC (Model View Controller) architecture in which the model contains all the logic required and the controller has the desired output and Angular handles all the processing required for getting that output. The structure is easy to create and maintain small applications easily but is relatively less manageable for large applications. Setting up AngularJS is easier too.

In Contrast, angular is based on controllers and directives. A directive, in a basic sense, is a function that executes whenever the compiler finds it in DOM. when directives are combined with templates, they are components. Together, they provide a structure that makes it easy for maintaining large applications but is not so easy with small applications.

Written language

AngularJS is written in JavaScript while Angular is written in Typescript which is a superset of ES6. Being a statically typed language, typescript has some benefits and avoids many pitfalls that generally occur while using weakly typed languages like Javascript. However when simplicity and flexibility matter, javascript may be a good choice.


Angularjs vs angular performance is one of the most important things to consider. It is one of the things where Angular is ahead than AngularJS.

This performance gap comes with one main change: the way of handling two-way binding. Two-way binding means that when anything changes in the model, the change is immediately propagated to UI, and when any UI element is updated, corresponding change happens in the model.

This is one of the important things that made the original AngularJS popular among developers. But, ensuring the two-way binding has its cost in AngularJS: it has run digest cycles that checks each scoped variable with a previous value which is randomly run thus decreasing performance for large scale applications.

Due to the flux architecture of Angular, the necessary detection of change occurs through unidirectional data flow thus makes applications fast.

Handling of Dependency Injection

Dependency injection is useful for making testing easier where dependencies are passed to other objects or frameworks. Both AngularJS and Angular have dependency injections, but their handling is different. In AngularJS, injections are done into many many link/constructor functions and directive definitions. But in Angular, there is a hierarchical dependency injection system using decorations, providers, and constructor functions.

What To Choose?

As evident from the discussion above, Angular is ahead of AngularJS on many fronts. But this doesn’t prove Angular to be the clear winner either. The reason is that Angular being good, it has its disadvantages.

As we have seen earlier, Angular is not completely suitable for the development of Simple web apps. Also, setting up angular is not easy either. Another big disadvantage is that Angular being completely different requires a complex migration process for existing AngularJS applications to get to Angular and adding to this, Angular has a steep learning curve. People would change to Angular only if they have a strong reason to do so.

AngularJS is reasonably stable by now and even though there would be no support from Google, it could be maintained by enthusiastic developers. So, AngularJS would not be completely dead and still be worth learning.

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