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It is really tough to decide which framework to choose for developing dynamic web and mobile applications. Before moving into the comparison among AngularJS, Angular 2, and Angular 4, let’s first know ‘What is Angularjs?,’ ‘What are its various versions?’ and their features and drawbacks. Keep on reading!
Watch this Angular vs AngularJS video:
What is AngularJS?
AngularJS is also referred to as Angular 1, which is an open-source JavaScript framework. This framework is designed to build single-page applications. It overcomes the downside of HTML and also makes the best practice of libraries. Following are some of the features of AngularJS:
- Model-View-Controller:
AngularJS supports the MVC architecture that makes it easy for
developers to design client-side web applications.
- Data
model binding: There
is no need for writing code to bind data to HTML. This will be done
by adding a few code snippets by Angular.
- Requires less code: Before Angular, there was a need for a lot of JavaScript code for Document Object Model (DOM) manipulation for developing an application. Angular requires lesser code for DOM manipulation.
- Unit testing: Earlier, it was time taking to perform testing for each component of an application. In AngularJS, the testing process is very simple. It uses Dependency Injection to connect with the application that manages and controls everything with simplicity.
Following are some of the pros and cons of AngularJS.
Pros of AngularJS
- AngularJS
supports both unit testing and integration testing.
- It
provides a routing facility, which is making a move from one view to
another.
- It
provides two-way binding, which keeps the presentation layer and
data in sync.
- It
provides directives that help the functionality of HTML elements,
which provide more power
to a web application.
Cons of AngularJS
- AngularJS
is less secure because it doesn’t provide server authentication
and authorization.
- It
might lead to a memory leak, which causes various issues such as
high latency, crashing, and slowing down of the process.
- It
has various ways to perform the same task,
so it is hard to predict which is the best way to perform the task.
- It
is not supported everywhere, and it is totally
based on JavaScript.
What is Angular 2?
Angular
2 (Angular)
is a complete remake of the original AngularJS. It was rebuilt from
scratch using TypeScript by the Angular team, keeping in mind the
concept of having components with better performance and improved
features that would help Web Developers.
Some of the key features of Angular 2 are as given below:
- TypeScript: TypeScript is the superset of JavaScript that allows an increase in code efficiency by using the OOPs concept.
- Components: Angular 2 focuses on components over controllers, which helps in efficiently maintaining applications within a period of time.
- Services: It provides a set of code (services) that could be shared by various components of the applications.
- Cross-platform: With Angular, we can build and run applications on desktops, iOS, and Android systems.
Here
are some of the advantages and disadvantages of Angular 2.
Advantages of Angular 2
- Angular
2 provides simpler routing,
and it is mobile-oriented.
- It
provides various languages to choose from, such as TypeScript, Dart,
ES6, and ES5.
- It
has enhanced modularity and dependency injection.
Disadvantages of Angular 2
- Angular 2 is tough to set up when compared to AngularJS.
- It is not effective in building small and simple web applications.
If you want to prepare for jobs? You can check out our blog on Angular Interview Questions.
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What is Angular 4?
Angular
4 is the rewritten version of AngularJS, which is quite different
from Angular 2. It has a few minor changes, along with some newly
added features to it. Angular 4 also supports TypeScript, compatible
with JavaScript, which gives the same output.
Following
are some of the key features of Angular 4:
- Faster
and smaller: In this version,
programs run quicker than in the older versions and use less space.
- Animation
package: This feature helps
us find docs easily and acquire the advantage of auto-completion by
importing the @angular/platform-browser/animations package.
- Angular
Universal: The greater part
of the universal code is located in the new renderModuleFactory
method in the @angular/platform server that consists of many code
samples and documentation.
- Compatibility
of TypeScript 2.1 and 2.2: The
Angular team has enhanced the TypeScript version, which offers
better type checking throughout the program.
Following
are some of the pros and cons of Angular 4.
Pros of Angular 4
- It
allows faster application development processes and also
easy-to-write tests.
- It
provides a modular animation package.
- It
is used for single-page web applications with an improved view
engine.
- It
supports TypeScript and also helps in developing large applications.
Cons of Angular 4
- The processing is slow when displaying a huge amount of data.
- Testing is challenging in Angular 4.
- It doesn’t support the older versions of browsers.
- It is difficult to maintain server templating.
Learn about key differences between Angular and React in this comparison blog on Angular vs React.
As we have come to know about ‘What is Angular?’ and their versions, now, let’s dive into the discussion on ‘Angular vs AngularJS,’ ‘Angular 2 vs Angular 4,’ and ‘AngularJS vs Angular4.’
Differences Between AngularJS and Angular 2
Here is the comparison between Angular 2 and AngularJS based on mobile support, functions, and Angular architecture.
|
Angular 2
|
AngularJS
|
|
Released in 2016
|
Released in 2010
|
|
Follows
a component-service
architecture
Service/Control
architecture
|
Follows Model-View-Controller (MVC)
architecture
|
|
Was
created to build mobile-based applications
|
Was created to build web-based
applications
|
|
Runs
on both server-side and client-side
|
Runs only on client-side
|
|
To initialize bootstrap, the module()
function is used
| To initialize AngularJS bootstrap, ng-app functions are used |
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Difference Between Angular 2 and Angular 4
Below
are some of the differences between Angular and Angular 4 versions:
|
Angular 2
|
Angular 4
|
|
The size of a file generated by
Angular 2 is large, hence the performance is slow
|
The size of a file generated by
Angular 4 is reduced by 60% so that the performance is fast
|
|
The animation package is not present
|
The animation package is present
|
|
Angular 2 is compatible with
TypeScript and Dart
|
Angular 4 is compatible with the
enhanced versions of TypeScript 2.1 and TypeScript 2.2
|
|
It doesn’t have a specific phase to
adjust code
|
It has a proper phase to adjust code
for developers
|
|
Instance
scope controller is present
|
Instance
scope controller is not present
|
Go through these Android Interview Questions to excel in your interview.
AngularJS vs Angular 2 vs Angular 4: A Complete Comparison
Here, you can compare any of the versions of Angular, be it AngularJS vs Angular 2, Angular 2 vs Angular 4, or AngularJS vs Angular 4.
|
Parameters
|
AngularJS
|
Angular 2
|
Angular 4
|
|
Origin
|
It is an open-source front-end
framework used for developing dynamic web apps
|
Angular 2 is an open-source front-end
web application framework
|
Angular 4, an enhanced version of
AngularJS,
is an open-source web
application platform
|
|
Architecture
|
AngularJS follows the
Model-View-Controller architecture
|
Angular
2 is based-on the component-service architecture
|
Angular 4 is based on
structural-directives
|
|
Language used
|
AngularJS uses JavaScript
|
Angular 2 uses Microsoft’s
TypeScript
|
Angular 4 uses the latest versions of
TypeScript
|
|
Expression syntax
|
In AngularJS, we need to remember the
accurate ng directive to add images, property, and events
|
Angular 2 follows parentheses () for
event binding and square brackets [] for property binding
|
Angular 4 follows advanced syntax,
i.e., ngIf and ngFor directives
|
|
Performance
|
Slow performance
|
Faster performance
|
Improved performance by dependency
injection
|
|
Routing
|
The $routeProvider.when() method is
used for routing configuration
|
@RouterConfig{(….)} is used by
Angular 2 for routing configuration
|
It uses two routing methods:
RouterModuleforRoot () and RouterModuleforChild ()
|
Learn about Angular 6 in our blog on Angular 6 features.
Conclusion
As Angular is evolving constantly, developing web applications have become more secure, flexible, and scalable, which helps developers work easily. The enhanced versions have better components, execute faster than the older versions, and allow us to upgrade ourselves easily to the latest versions of Angular. As of now, the latest version of Angular is Angular 8 that is used by expert Web Developers. Although for beginners, Angular 2 is easier to understand than Angular 4.
If you are interested in Web Development, enroll now in Intellipaat’s Angular Certification Course!
I
hope this article was helpful
for you to understand the complete differences between the different
versions of Angular. If you have any more queries, share them in the
comments section below.