Updated on 24 Jan 2020 | 4 Min Read

What is React.js?

React.js has been developed as well as maintained by Facebook and used in their own products which included Instagram and Whatsapp. React.js has been in the game for five years now and has gained much profit and also has been able to maintain its grip in the technological world. On Github, React.js is a popular project, it had 11,900 starts at the writing phase. There are many React js interview questions that are based on its comparison with Angular js.

What is Angular js?

Angular js is relatively newer than React. But, it is equally developed and maintained as React js. Angular js have been developed as well as maintained by Google and widely used in more than 600 applications including some of the most popular apps that we use such as Google Analytics, Google Express, Google Cloud Platform, Firebase Console and more.

When compared, it can be seen that both of the platforms are extremely beneficial and can do wonders when used properly. To compare both, following are the basics which can be used to a justified result:


The Basics

Angular is a JavaScript framework that has been written in TypeScript. It was originally released in the year 2016 but an initial release also took place in the year October 2010. The newest version of Angular js is the Angular 6 which has great capabilities and features. On the other hand, React js is a JavaScript library that was released in the month of March in the year 2013. It has a huge library widely used in the development of user interfaces. If the usage of both these frameworks is considered, it can be said that React js is more widely used in Facebook than Angular js at Google.


While Angular is a complete integrated MCV framework, React JS is merely a JavaScript library. Angular can be considered as a framework because of its ability to offer opinions as to how a web/desktop application should be developed/ structured. It has much more additional functionalities such as automatic detection of routing libraries, XSS protection, Dependency injection, component CSS encapsulation, utilities for unit testing components and many more But, Angular js is less flexible than React js. React js, on the other hand, provides much more flexibility and freedom to the user. It only provides the features of “view” in the MVC approach. Thus, any libraries, as per the developers’ convenience and preference, can be chosen. This will result in comparatively independent, faster-moving libraries. But, with this facility, the developer needs to take care of the corresponding updates and migrations. React js provides JSX language with interesting templates instead of classic templates. There is no dependency injection and it provides fetch for Ajax requests.

Usage of DOM

In Angular, usage of regular DOM leads to updating the entire tree structure of HTML tags until it reaches the user’s age. On the other hand, using Virtual DOM leads to making the program exceptionally fast. This makes React js different from other frameworks and more preferable by users.


React decided to do something that was not done by any company before, they decided to combine UI templates and logic of inline JavaScript. The outcome of this is known as “JSX”. This idea was not something that looked great when it was first thought about but Facebook played the gamble and it paid off very well. The templates that are used by Angular are enhanced HTML and Angular directives. With React the developers only need the knowledge of JavaScript but in the case of Angular, the developers need the knowledge of the syntax too.


React and Angular both frameworks are based on components.

Data Binding

React only supports one-way binding, whereas Angular supports two way binding of data. The method of Angular is easy to understand at first but as we move into big projects the method of React is better. Data binding is an important topic in Angular and, it is a concept from where man Angular 6 Interview questions can be taken from.


So by now, the differences between ReactJS and Angular frameworks must be clear. The difference was stated with the help of features or properties such as architecture, usage of DOM, templates, etc. You can rely on anyone or both languages as per your requirements and usage.