Angular vs Angular JS

Angular vs Angular JS

10 Mar 2024
Beginner
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12 min read

Difference between Angular and AngularJS - An Overview

Frameworks are essential to simplify web development and improve developers' productivity as the field develops. Two well-known frameworks created by Google for creating dynamic web applications are AngularJS and Angular.  We will study the features, give an overview of AngularJS and Angular, and go over the benefits and drawbacks of each in this Angular Tutorial. In addition, we'll look into tools such as Angular Certification Training to help you improve your skills in these frameworks.

Difference between Angular and AngularJS

What is Angular JS?

AngularJS, the predecessor of Angular, is an open-source JavaScript framework developed by Google in 2010. It is designed to make front-end development more straightforward by providing a structured framework for building dynamic, single-page web applications. 

AngularJS uses two-way data binding, allowing automatic synchronization between the model and the view, reducing the need for boilerplate code.

Angular JS Example

<!DOCTYPE html>
<html ng-app="myApp">
<head>
<title>AngularJS Example</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.0/angular.min.js"></script>
</head>
<body>
<div ng-controller="myController">
<h2>{{ greeting }}</h2>
<input type="text" ng-model="name" placeholder="Enter your name">
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myController', function($scope) {
$scope.name = '';
$scope.greeting = 'Hello, ' + $scope.name + '!';
$scope.$watch('name', function() {
$scope.greeting = 'Hello, ' + $scope.name + '!';
});
});
</script>
</body>
</html>

Output

Hello, ScholarHat!

Features of Angular JS

  • Two-way Data Binding: AngularJS facilitates real-time synchronization between the model and the view, ensuring any changes in one reflect in the other.
  • Directives: Directives extend HTML attributes, enabling developers to create custom and reusable components.
  • Dependency Injection: AngularJS employs a dependency injection system, making it easier to manage and test components.
  • Scope: The concept of scope in AngularJS defines the context in which expressions are evaluated, providing a clear separation of concerns.

Advantages and Disadvantages of AngularJS

Advantages

  • Rapid Development: AngularJS's declarative approach accelerates development by reducing the need for boilerplate code.
  • Flexibility: It allows developers to build dynamic, single-page applications with ease.
  • Community Support: Being an open-source framework, AngularJS has a vast and active community that contributes to its growth and maintenance.

Disadvantages

  • Performance Issues: As applications grow in complexity, AngularJS may face performance challenges due to its two-way data binding mechanism.
  • Steep Learning Curve: Beginners might find AngularJS's complex concepts and directives challenging to grasp.

What is Angular?

Angular, commonly referred to as Angular 2+ or just Angular, is a complete rewrite of AngularJS. Released in 2016, Angular is a modern, modular, and component-based framework for building scalable and dynamic web applications. 

It incorporates TypeScript, a superset of JavaScript, which adds static typing and other features to enhance code quality and maintainability.

Angular Example

<!DOCTYPE html>
<html>
<head>
<title>Angular Example</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/2.0.0/angular.min.js"></script>
</head>
<body>
<app-root></app-root>
<script>
// This script uses Angular (Angular 2+ syntax)
// Create a simple Angular component
class AppComponent {
name = '';
greeting = 'Hello, ' + this.name + '!';
updateGreeting() {
this.greeting = 'Hello, ' + this.name + '!';
}
}
// Bootstrap the Angular application
angular.module('myApp', []).component('appRoot', {
template: `
<div ng-controller="myController">
<h2>{{$ctrl.greeting}}</h2>
<input type="text" ng-model="$ctrl.name" placeholder="Enter your name" ng-change="$ctrl.updateGreeting()">
</div>
,
controller: AppComponent
});
</script>
</body>
</html>

Output

Hello, ScholarHat!

Features of Angular

  • Modularity: Angular applications are built as a collection of modules, promoting code organization and maintainability.
  • TypeScript Integration: TypeScript brings static typing to Angular, enhancing code quality and providing better tooling support.
  • Angular CLI: The Command Line Interface (CLI) simplifies the development process, offering commands for scaffolding, testing, and deploying Angular applications.
  • RxJS Integration: Angular uses Reactive Extensions for JavaScript (RxJS) to handle asynchronous operations and events more efficiently.

Advantages and Disadvantages of Angular

Advantages

  • Performance: Angular's one-way data binding and improved change detection contribute to better overall performance.
  • Modularity and Reusability: Angular's modular structure and angular component-based architecture make it easy to build and reuse components across the application.
  • Enhanced Tooling: Angular CLI and comprehensive documentation streamline the development process.

Disadvantages

  • Learning Curve: Similar to AngularJS, Angular has a steeper learning curve, especially for developers new to TypeScript and modern front-end development.
  • Complexity: The enhanced features and modularity come at the cost of increased complexity.

Difference between Angular and Angular JS

PointsAngular JSAngular
ArchitectureFollows the MVC (Model-View-Controller) architecture. Uses controllers and scopes to manage the application logic and data binding.Embraces a component-based architecture. Utilizes Angular components, Angular Services, and modules for a more modular and scalable structure.
Written LanguagePrimarily uses JavaScript.Built using TypeScript, a superset of JavaScript that adds static typing and other features for enhanced code quality.
Mobile SupportLimited support for mobile development.Offers improved mobile support with features like responsive design and mobile-first development.
Expression SyntaxUses two-way data binding with expressions enclosed in double curly braces, like {{ expression }}.Utilizes property binding and event binding with a different syntax, reducing the use of double curly braces.
Dependency InjectionImplements a simple dependency injection system.Has a more sophisticated and hierarchical dependency injection system, providing better modularity and testability.
RoutingUses ngRoute module for client-side routing.Incorporates a more advanced and feature-rich router module.
StructureOrganizes code using controllers and directives.Adopts a modular structure with components, services, and modules.
CLI (Command Line Interface)Lacks a dedicated CLI.Provides Angular CLI for scaffolding, building, testing, and deploying applications efficiently.
Examples ApplicationExamples often include simple single-page applications, demonstrating two-way data binding and basic MVC concepts, like iStock, and Netflix.Examples showcase more complex applications with component-based architecture, demonstrating features like lazy loading and advanced routing, like Upwork, and Gmail.

Read More:

Summary
In conclusion, both AngularJS and Angular have played significant roles in shaping the landscape of web development. AngularJS, with its two-way data binding and simplicity, paved the way for dynamic single-page applications.  On the other hand, Angular, with its modern architecture and enhanced features, offers improved performance and scalability.  Additionally, we'll also delve into an Angular Certification Course and provide a comprehensive Angular Tutorial to help you enhance your skills.

FAQs

Q1. What is the main difference between Angular and AngularJS?

  • AngularJS: It is the first version of the framework released by Google in 2010, focusing on two-way data binding and the MVC architecture.
  • Angular: Often referred to as Angular 2 and above, it is a complete rewrite of AngularJS, introducing a component-based architecture, improved performance, and TypeScript integration.

Q2. What is TypeScript, and why is it used in Angular?

  • TypeScript: TypeScript is a superset of JavaScript that adds static typing and other features to enhance code quality and maintainability.
  • Angular: Angular is built using TypeScript to leverage its benefits, including better tooling support, improved code readability, and reduced chances of runtime errors.

Q3. How does the architecture differ between AngularJS and Angular?

  • AngularJS: Follows the MVC (Model-View-Controller) architecture.
  • Angular: Adopts a component-based architecture where applications are built as a collection of modular components.

Q4. How do expression syntax and data binding differ in Angular and AngularJS?

  • AngularJS: Uses two-way data binding with expressions enclosed in double curly braces, like {{ expression }}.
  • Angular: Utilizes property binding and event binding with a different syntax, reducing the use of double curly braces and offering a more streamlined approach.

Q5. Which is better: AngularJS or Angular?

Each version of Angular has its own set of advantages, but staying current with the most recent version has a lot to offer. Angular is significantly quicker than AngularJS, takes a mobile-first approach, performs better with components, and allows for an easier migration from previous versions.

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About Author
Shailendra Chauhan (Microsoft MVP, Founder & CEO at Scholarhat by DotNetTricks)

Shailendra Chauhan is the Founder and CEO at ScholarHat by DotNetTricks which is a brand when it comes to e-Learning. He provides training and consultation over an array of technologies like Cloud, .NET, Angular, React, Node, Microservices, Containers and Mobile Apps development. He has been awarded Microsoft MVP 8th time in a row (2016-2023). He has changed many lives with his writings and unique training programs. He has a number of most sought-after books to his name which has helped job aspirants in cracking tough interviews with ease.
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