in Education by

AngularJS Vs. Angular 2 Vs. Angular 4: Understanding the Differences

1 Answer

0 votes
by
The technologies that enable the Internet tend to change, progress and evolve at rapid speeds, as requirements change and developers build better versions of the software. Angular is a case in point, with wide changes in just a few years. Google developed AngularJS in 2009 and version 1.0 was released in 2012. Angular has since dominated the world of open-source JavaScript frameworks, with the enthusiastic support and widespread adoption among both enterprises and individuals. As a result, Angular has evolved from the AngularJS version 1.0 to Angular version 2.0 and now the latest Angular version 4.0, all in just five years. Despite the potential benefits of the upgrades, some in the Angular community have concerns about migrating to a newer version. Keep reading to find out what has changed in Angular and why migrating to the latest version is a good idea. We’ll give you an in-depth comparison so you can understand the differences and make an informed decision. Master the front-end development and gain in-depth knowledge of Angular concepts with the Angular Certification Training course. Check out now. Angular Versions Before we dive into the differences, let’s first clarify each version with a description: AngularJS is an open-source, JavaScript-based, front-end web application framework for dynamic web app development. It utilizes HTML as a template language. By extending HTML attributes with directives and binding data to HTML with expressions, AngularJS creates an environment that is readable, extraordinarily expressive and quick to develop. Angular is the blanket term used to refer to Angular 2, Angular 4 and all other versions that come after AngularJS. Both Angular 2 and 4 are open-source, TypeScript-based front-end web application platforms. Angular 4 is the latest version of Angular. Although Angular 2 was a complete rewrite of AngularJS, there are no major differences between Angular 2 and Angular 4. Angular 4 is only an improvement and is backward compatible with Angular 2. Difference Between Angular Versions Below is a comparison of AngularJS to Angular, because Angular includes both version 2 and version 4. We compare architecture, language, expression syntax, mobile support, and routing. 1. Architecture AngularJS The architecture of AngularJS is based on the model-view-controller (MVC) design. The model is the central component that expresses the application's behavior and manages its data, logic, and rules. The view generates an output based on the information in the model. The controller accepts input, converts it into commands and sends the commands to the model and the view. Angular In Angular 2, controllers and $scope were replaced by components and directives. Components are directives with a template. They deal with a view of the application and logic on the page. There are two kinds of directives in Angular 2. These are structural directives that alter the layout of the DOM by removing and replacing its elements, and attributive directives that change the behavior or appearance of a DOM element. In Angular 4, the structural derivatives ngIf and ngFor have been improved, and you can use if/else design syntax in your templates. 2. Language AngularJS AngularJS is written in JavaScript. Angular Angular uses Microsoft’s TypeScript language, which is a superset of ECMAScript 6 (ES6). This has the combined advantages of the TypeScript features, like type declarations, and the benefits of ES6, like iterators and lambdas. Angular 4 is compatible with the most recent versions of TypeScript that have powerful type checking and object-oriented features. 3. Expression Syntax AngularJS To bind an image/property or an event with AngularJS, you have to remember the right ng directive. Angular Angular focuses on “( )” for event binding and “[ ]” for property binding. 4. Mobile Support AngularJS was not built with mobile support in mind, but Angular 2 and 4 both feature mobile support. 5. Routing AngularJS uses $routeprovider.when() to configure routing while Angular uses @RouteConfig{(…)}. Performance AngularJS was originally developed for designers, not developers. Although there were a few evolutionary improvements in its design, they were not enough to fulfill developer requirements. The later versions, Angular 2 and Angular 4, have been upgraded to provide an overall improvement in performance, especially in speed and dependency injection. 1. Speed By providing features like 2-way binding, AngularJS reduced the development effort and time. However, by creating more processing on the client-side, page load was taking considerable time. Angular2 provides a better structure to more easily create and maintain big applications and a better change detection mechanism. Angular 4 is the fastest version yet. 2. Dependency Injection Angular implements unidirectional tree-based change detection and uses the Hierarchical Dependency Injection system. This significantly boosts performance for the framework. Full Stack Java Developer Course The Gateway to Master Web DevelopmentEXPLORE COURSEFull Stack Java Developer Course Advantages and Disadvantages Because they are Google products, all Angular versions are trustworthy and enjoy great support from Google engineers and the large community of Angular users and developers. However, each version has its own advantages and disadvantages. 1. AngularJS Advantages It is unit testing ready. It has great MVC data binding that makes app development fast. Using HTML as a declarative language makes it very intuitive. It is a comprehensive solution for rapid front-end development since it does not need any other frameworks or plugins. AngularJS apps can run on every significant program and advanced cells including iOS and Android-based phones and tablets. Disadvantages It is big and complicated due to the multiple ways of doing the same thing. Implementations scale poorly. If a user of an AngularJS application disables JavaScript, nothing but the basic page is visible. There’s a lagging UI if there are more than 200 watchers. 2. Angular 2 Advantages TypeScript allows code optimization using the OOPS concept. It is mobile-oriented. It has improved dependency injection and modularity. It provides more choice for languages such as Dart, TypeScript, ES5, and ES6 for writing codes. It offers simpler routing. Disadvantages It is more complicated to set up compared to AngularJS. It’s inefficient if you only need to create simple, small web apps. 3. Angular 4 Advantages It enables a fast development process. It’s ideal for single-page web applications with an extended interface. Full TypeScript support helps in building bulky applications. Tests are easy to write. An improved View Engine generates less code in AOT mode. It has a modularized animation package. Disadvantages It’s slow when displaying enormous amounts of data.

Related questions

0 votes
    What are the differences between AngularJS and Angular?...
asked Jun 29, 2021 in Technology by JackTerrance
0 votes
    Written communication involves: 1.TALKING TO INDIVIDUALS 2.UNDERSTANDING THE SIGNS AND SYMBOLS 3.LETTERS, MEMOS, BOOKS 4.NONE OF THESE Select the correct answer from above options...
asked Dec 2, 2021 in Education by JackTerrance
0 votes
    I am working with Entity Framework for a while but still have some "black holes" with how it is ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Feb 20, 2022 in Education by JackTerrance
0 votes
    i want the answers of understanding computer applications with blue J icse class 10 of chapter 4 Q23 Select the correct answer from above options...
asked Dec 19, 2021 in Education by JackTerrance
0 votes
    S3 is a storage facility, EBS is a device, EFS is a file system. Can you please help me in choosing among the three and where Select the correct answer from above options...
asked Jan 24, 2022 in Education by JackTerrance
0 votes
    What are the key differences between BOXI R3 and SAP BO 4.x?...
asked Mar 13, 2021 in Technology by JackTerrance
0 votes
    Quick Summary of my question: Does Gulp 3.6.0 dest() handle glob-base the same way as 4.0.0? ... , JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked May 19, 2022 in Education by JackTerrance
0 votes
    I am using Angularjs, I have two api in method in factory method. I tried to access that two ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jul 20, 2022 in Education by JackTerrance
0 votes
    Hi can somebody help Removing element from nested json array like this JSON [{ "id": 1, "name": ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 30, 2022 in Education by JackTerrance
0 votes
    I am trying to create an app using AngularJS that takes a user's location (from their mobile) and ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 19, 2022 in Education by JackTerrance
0 votes
    Hi can somebody help Removing element from nested json array like this JSON [{ "id": 1, "name": ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 19, 2022 in Education by JackTerrance
0 votes
    How can set row number for each table row created by dir-paginate angularJs. I use two way code ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 14, 2022 in Education by JackTerrance
0 votes
    I am trying to create an app using AngularJS that takes a user's location (from their mobile) and ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 12, 2022 in Education by JackTerrance
0 votes
    Hi can somebody help Removing element from nested json array like this JSON [{ "id": 1, "name": ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 8, 2022 in Education by JackTerrance
0 votes
    I'm not sure why the change detection wouldn't work here. I've tried a few things, including a ... JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)...
asked Jun 18, 2022 in Education by JackTerrance
...