Reasons to migrate from AngularJS to React

In the past few years, AngularJS was one of the oldest and most popular frameworks. For some time it had a huge share of the market and every business wanted their products developed on AngularJS. But time goes further and new modern and flexible technologies appear and override all the benefits that AngularJS ever suggested. Several months ago the Angular team has cut off the support of AngularJS and some businesses haven't migrated to Angular 2+ or React until that time, so now they are looking for such services. As a ReactJS development company, we have seen a lot of React benefits over other frameworks and this time we'd like to introduce why you should migrate from AngularJS to React.



React is faster than AngularJS because it’s more efficient with data binding. The reason why React can handle so much data is because of its virtual DOM and the way that the framework handles rendering. 

In AngularJS, the whole process of updating the view was handled by dirty checking. This means that every time you changed something on your page, whether it was adding or removing an element or changing text, you’d have to re-render everything from scratch – even if only one piece of data changed! That’s not good for performance at all! 

With React, however, there are two different components: the render function which takes in input variables (such as the state) and returns an output variable (in this case HTML). Then there’s also the shouldComponentUpdate() lifecycle method which takes in these input values as well as compares them against current ones before deciding whether or not those components need updating based on changes made elsewhere within our app; essentially skipping unnecessary work by only updating things when necessary rather than when every change occurs.

Having more flexibility and freedom

Having more flexibility and freedom

React is a library and AngularJS is a framework. A library is more flexible than a framework, so you can use it in any way you want. In contrast, frameworks have already defined how to use them, which may not fit your project well.

React has the advantage of being lightweight (about 35kb gzipped), whereas AngularJS weighs around 100kb gzipped. This means that React will load faster than AngularJS and help your application run more smoothly with less lag between pages/screens as they are loading in the browser.

Furthermore, React allows you to create smaller components compared to AngularJS because there isn’t anything else added on top of what React provides out-of-the-box (like controllers or services).

Virtual DOM

Virtual DOM

The virtual DOM is a JavaScript object that represents the actual DOM. It’s created based on the current state of the DOM, and then it’s compared to the real DOM to see if there are any changes. If there is a change in either direction—from real to virtual or from virtual to real—it’s applied so that you are left with one consistent set of data.

When the virtual DOM is updated, it triggers a re-render of the real DOM. This process makes it possible for you to change the appearance and behavior of your web application without having to manually update all of its elements.

The virtual DOM enables you to work with your application in different easier and more comprehensive ways.

You can treat your application like a tree of components. You don’t have to worry about how deep down you go in order for one component to affect another because it’s handled by React automatically. This makes it easy for even non-technical people on your team (designers, product managers) to get involved with React projects because they won’t be dealing with complicated code or trying to understand what each piece does; their changes will just “magically happen.” 

This also makes debugging much easier since you only need one place where something goes wrong instead of searching through several different places for inconsistencies between different elements and versions at runtime (which could break quickly).

To make the migration process as smooth as possible you need the services of a development company with a reputation and experience. RIVO AGENCY has more than 13 years of experience in the market. We create websites, apps, and software to help businesses to grow.

AngularJS isn't flexible

AngularJS isn't flexible

AngularJS is a framework, not a library. While this might be a good thing for large projects with lots of developers, it’s not so great for small ones.

The problem with frameworks like AngularJS is that they come with quite a bit of boilerplate code and have steep learning curves. This can make them difficult to pick up if you’re on your own or working in an organization where most people aren’t familiar with AngularJS. They also don’t scale well as your project gets bigger: you’ll start having problems managing all the different parts of your app without any help from third-party libraries and tools built specifically around workflows specific to frameworks like AngularJS, React, Vue, etc.

The one-way data flow

One-way data flow is a pattern that describes how data propagates through an application. The idea behind one-way data flow is that it’s the parent component, not the child component, that manages all of its states and determines what props should be passed down to its children.

This pattern has two main benefits:

  • It makes your applications easier to test because you can keep track of what mutations are happening in each component separately from where they’re happening (i.e., at the top level vs. within nested components). This helps keep you from having to dance around with mock functions everywhere just so you can test them properly like we had to do with AngularJS!
  • It makes it much easier for components to reuse logic written on their parents because this logic will always be available for them rather than having to be duplicated somewhere else (like an event handler).

These are four reasons to migrate from AngularJS to React.

Why would you want to migrate from AngularJS to React? There are four reasons:

  • Performance. React’s virtual DOM and smart diffing techniques give it a significant performance advantage over AngularJS, especially in large applications.
  • Flexibility. Because of its familiarity with HTML and JavaScript, you can easily mix third-party libraries like Flux/Reflux with your application in ways that just aren’t possible with AngularJS (or any framework for that matter).
  • Virtual DOM. React’s use of the virtual DOM lets it re-render only what needs to be re-rendered when state changes occur instead of all components at once, which makes everything faster and more efficient — especially when working with large data sets or multiple related components whose dependencies change often over time (elements in lists or grids).
  • One-way data flow. In React the parent components have full control over the child components, the states, and props transferred to them.


The long and short of it is, React is faster and easier to use than AngularJS. It provides a lot of flexibility and freedom for developers who want to build their apps the way they want to build them. The one-way data flow makes it very easy to work with changes in any part of your app without worrying about breaking anything else. Plus React uses a virtual DOM that makes rendering changes much faster than what you would get with AngularJS’s two-way binding model.

If you need a consultation or services of a custom software development company – write to us. In RIVO AGENCY we’re eager to help each client and provide the best services to meet their needs.

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