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Difference Between AngularJs vs. Angular 2 vs. Angular 4 vs. Angular 5 vs. Angular 6

Google developed Angular in 2009 and launched its revised version 1.0 in 2011. Angular JS has become one of the most preferred choices by JavaScript developers today. This is the market leader of open-source JavaScript frameworks too. It is well known for the enthusiastic support and the widespread adoption among enterprise owners and individuals.

Therefore, it has evolved from the basic version to the latest Angular 6.0 version where advanced features are added to every new version to make it more suitable as per the latest market trends. Many of the users are migrating to its latest and improved versions due to the functionality and features available with them.

Today, we have written this blog to provide you with a comparative study of various AngularJS versions that are Angular 1,2,4,5 and the latest one that is AngularJS 6. Through this comparative study, you will be able to compare and choose the best version for your next IT project.

Demystifying the differences between Angular Versions in Brief

Before explaining and comparing all versions of AngularJS in detail, let us first describe the major differences in brief:

  • AngularJS is a front-end, open-source, JavaScript-based dynamic web application framework that is used for web application development. HTML language is used as a template in this scripting language. Here data is bound with expressions and helps to create more expressive and extraordinary environment that can quickly develop the applications.
  • The versions that were launched after AngularJS, the term Angular is associated with almost every version including Angular 2, Angular 4 and rest of the versions. Angular 2 and 4 are TypeScript-based front-end web application platforms and are open-source versions.
  • Angular 2 was the complete rewrite of AngularJS, while Angular 4 is backward compatible and rewrite version of Angular2 and is not majorly different from Angular2.
  • Angular 5 has lots of improved features and several bugs have been fixed in this version and have improved performance. It is quite advanced and improved version than Angular4.0. Several drawbacks of version 4 have been removed in this version of Angular 5.0
  • Angular 6 has been furthermore advanced and improved than Angular 5.0. It is faster, smaller, and easy to use version launched to make the life of developers easier and advanced.

Difference Between AngularJs vs. Angular 2 vs. Angular 4 vs. Angular 5 vs. Angular 6 infographic Angular JS is considered the fastest growing and evolving front-end application development solution. It can resolve the compliance factors across different orientations of mobile and the desktop. This is all because the language provides a continuously expanding and growing framework to provide better ways for developing web applications. More authentic templates and the data-binding facility is also available within this framework.

Angular has become the topmost choice of the developers due to a wider range of features that are offered in its every improved version. To choose the best among all available version, this is necessary here to compare various versions of Angular to get a perfect idea.

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Differences between Angular JS and Angular 2

When the first version of AngularJS was released in 2010 than it was referred as Angular 1, while Angular 2 was released in 2016 that was not an update but a completely transformed version of Angular which was written from the scratch only. This is why when someone writes a code in Angular and Angular 2, it looks completely different. Here, in this section, we are going to highlight the major differences between both of these versions that make them unique from each other.

Angular JS vs. Angular 2 – Components

Here, Angular JS wins the race among too.

  • When AngularJS and Angular 2 are compared on the basis of communication between components then Angular JS will be found smooth and fast in message processing between various components. Therefore, it is considered as highly supportive and convenient interface for the developers.
  • AngularJS is controller based in which $scope is used to set up communication among Views, while a component-based approach is followed in Angular 2 and there is no existence of controllers in Angular2. In Angular 2 the controllers are only used assorted building blocks that makes the code reusability easier.
  • Unit testing is done in quite less time in Angular 2 and it is usually done by using components that promotes smoothness and consistency. Due to this feature, they can be tested for the use of resources, event execution, and the component flow.

Angular JS vs. Angular 2 – Performance

Here, Angular 2 is a little stronger than Angular JS.

  • If the performance of Angular JS and Angular 2 will be compared then you will find that Angular 2 is 5 times faster than the AngularJS.
  • One more major difference between both versions is that Angular JS does not support mobile devices, while Angular 2 does support all mobile devices.
  • There are more language choices in Angular 2 like Dart, JavaScript, TypeScript, Elm and PureScript etc. while this is not in the case of AngularJS that makes them unique from each other.

Differences Between Angular 2 And Angular 4

Angular 2 was released in 2016 and Angular 4 in 2017, but both are different in terms of the performance values. Angular 4 can be said and treated as an enhanced version of Angular 2 because it comes with better performance values, better resources, better user-interaction features, smoother results, least commotions, and the faster reflexes etc. Both of these versions have below-listed differences:

  • Angular 2 is not an extended version of Angular JS instead it is written from scratch. A little bit changes are made in core libraries rest of the services are completely re-written. Still, if you have earlier worked on Angular 2, then you will find Angular 4 quite easy to use.
  • Approaches and concepts of both Angular 2 and Angular 4 are the little bit same, so the developers can easily work on the Angular 4 and find it easy.
  • Angular 2 and Angular 4 both are the enhanced size of AoT or ahead-of-time and have compiler generated code. Due to compiler generated code, Angular 4 has become smoother and swift than the Angular JS 2.
  • Angular 2 supports TypeScript 1.8 version, whereas Angular 4 supports typescript 2.1 and 2.2 versions.
  • In Angular 4, user can use “else” block along with “*ngif” block, example is given below how it works actually:

Angular 2 Code:


1. <div *ngIf=”Condition”>
2.        <h2>Condition true!</h2>
3.    </div>
4.    <div *ngIf=”!Condition”>
5.        <h2>Condition false!</h2>
6.    </div>

How can the same code be written in Angular 4?

1. <div *ngIf=”Condition; else runFalsyTemplate”>
2.        <h2>Condition true!</h2>
3.    </div>
4.    <ng-template #runFalsyTemplate>
5.        <h2>Condition false!</h2>
6.    </ng-template>

What is new in Angular 5?

Angular 5 is far better than earlier versions of the Angular JS. It has a bunch of new features that may be advantageous for you. This version can improve the performance and enhances the bug-fixing capabilities too. Here, we are going to enlist some of the surprises for Angular lovers:

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  • Angular 5 has a Build Optimizer that is known to reduce or eliminate useless code from the application. This helps to achieve more optimized, neater, and arranged code structure when compared to previous versions.
  • It has in-built Angular Universal State Transfer API and Dom that helps in sharing the application state between the client side and the server side.
  • Incremental compilation can be done with the help of Angular 5 compiler and due to this feature, applications can be compiled in a faster and easier manner.
  • In this version Angular 5, whitespace is preserved that helps in keeping the code well-arranged and organized. There are the meaningful gaps and disjoints are also removed from the code.
  • The lambda expressions can be used to decorate the code.
  • The code can be optimized for different browsers, for this well-defined structure is being used along with a special format for date, numbers, currencies, and other functional elements.
  • Angular 5 comes with increased decorator support using lambda expressions and not the nomenclatures or naming functions. Here’s an example:

Angular 4

1. Component
({ 2. provider: [{
3. provide: ‘my-service’,
4. useValue: tempMethod()
5. }]
6. })
7. export class CustomizedClass {}  

Angular 5:

1. Component ({
2. provider: [{
3. provide:”


4. my – service ‘, useFactory: () => null}]
5. })
6. export class CustomizedClass {}  

 How Is Angular 6 Different From Previous Versions?

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Angular 6 has some of the advanced features and it is quite easier and faster in use. Below-listed features are provided in the latest version:

  • It has improved decorator and error message scheme
  • Multiple validators are added for array method
  • Added support for the native elements
  • Closure compiler that continuously generates small bundles
  • Typescript 2.7 + supports
  • Injectable HttpInterceprtor that can be injected HttpClient
  • Missing lifecycle tests can be added for projected components
  • Optional generic types can be added for ElementRef
  • Query predicates can be renamed LQuery and LQuery to LQueries
  • Canonical view query can be added
  • Type and hooks can be added to directive def
  • Restored state and navigation source can be added to NavigationStart

Final Words:

Web applications development has become more secure, easy, and quick with the help of Angular JS. It has made the applications scalable, flexible, and highly secure. Users can easily upgrade the basic version of Angular JS to any of the latest advanced version. As there were some bottlenecks in the previous versions, so the advanced versions were launched to eliminate those drawbacks.

After comparing all of these versions of Angular JS, we can say that each and every version is somehow different and unique from another one. Each version has few advanced features and in the future, we can expect more powerful features too. You can pick the one that suits your requirements the most.

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