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Angular or React – Let’s address this baffling choice

3. January 2020

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Angular and React are two of the very popular JavaScript-based technologies that are widely used for creating single-page applications (SPAs). Both the tools are quite advanced, well-supported, and constantly updated. However, this is pretty much difficult to conclude which one is the best, AngularJS or ReactJS. In the spirit of helping you decide which will suit your SPA development project the more, we’ve listed certain things that you always need to consider. 


The performance is largely based on how efficient an approach a tool implements to update data. In other words, the more efficient a JavaScript library or framework is when it comes to modifying the DOM – Document Object Model, the better experience it will provide to the end users. 

  • AngularJS operates on traditional or real DOM – that means if you make a small change in one element, it updates the whole tree data structure. This results in significant decrease in performance especially if your application is going to have too many watchers.
  • ReactJS makes use of virtual DOM that is designed to enhance the app performance and only updates elements that needs to be updated due to occurrence of changes, while having no effect on other components of the whole tree structure. 


Creating a single page application (SPA) is possible with both Angular and React technologies but the decision should be made on whether your final product would be a small, medium, or large application.  

  • AngularJS has a rigid architecture. Developing a relatively small single page application will be made fully functional right away; but when you try to add new functionalities into your AngularJS app, it will severely restrict the scope of your efforts at a very early stage of the development. 
  • ReactJS, on the other hand, has a quite flexible architecture that allows for more changes during the course of web application development. If you’re looking to produce a larger final app for the future then ReactJS is, no doubt, a practical option out of the two. 

Time Efficiency

The speed of developing an SPA comes down to having the necessary libraries on hand with ready functions or code, right at the beginning.

  • AngularJS lets you start developing an app immediately by simply adding a library to your dependencies. Its ecosystem is also quite immense that includes packages, add-ons, and plugins to make development easier.
  • ReactJS has a rapidly growing list of tools and its community is also burgeoning. When you’re at the initial stage of the app development in ReactJS, you’re struck with kind of choice paralysis because you’ve several build tools to pick out the best one – and it slows down the process.

Search Engine Optimization

You want your application to attain the maximum visibility on the internet; therefore you need to go with a technology that’s more SEO friendly in its essence.

  • AngularJS is almost completely rendered right inside the browser and requires additional tools to address SEO concerns, such as PhantomJS. 
  • ReactJS offers server-side rendering (SSR) which is better for search engine optimization and demands a little effort to carry out SEO best practices.