Front-end technologies have an impact on your business. They affect how your app performs, how scalable it is, and what extra costs it generates.
Therefore it’s important to ensure not only that technical specialists choose the framework, but that decision-makers in your business participate in that process.
In this article I’ll do a side-by-side comparison of two popular technologies: the Angular framework and the React library.
This article will be helpful to both technical specialists and non-tech decision-makers.
History and main differences
It’s suitable for both web and mobile apps, both single-page and multiple-page apps.
Angular is a complete and full-fledged MVC framework with such out-of-the-box components as:
- HTML-based templates
- Cross-site scripting protection
- Dependecy injection
- Utilities for unit-testing components
- Tools for building forms
There’s no need to decide where to get the components you need, what third-party libraries to integrate; you can just start coding. However, you have less flexibility compared to React.
- Cross-site scripting protection as well
- Fetch for Ajax requests
- No dependency injection
- Utilities for unit-testing components
With React, you will have to turn to third-party components to extend functionality. Or at least integrate native ones, for example React-router for routing.
At the same time, React is more flexible in certain ways; it may take some time and effort to extend its functionality, but you’ll get a more flexible tool than with Angular.
Document Object Model
When Angular needs to update one tag in the HTML document, it updates the entire tag tree until it reaches the required bit of data; this is a regular DOM. This works slower than a virtual DOM.
With React, when you need to update a certain tag in the HTML tags, the virtual DOM model will compare the previous and current HTML code and update only what needs to be updated. When React was first released, this was its killer feature.
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Both React and Angular are component-based, and this is their most significant common feature. Components receive inputs, apply their logic, and return rendered user interfaces — for example, a login form for users.
Developers love components so much because they are easy to reuse within other components and even inside other projects. Just change the data, and everything works fine in the other app.
The component re-displays the UI when data changes so that users only see the up-to-date data. This complete UI re-rendering involves particular complexities, and state management solutions are meant to solve them.
With Angular, you probably won’t need state managers, but when your application becomes large enough you will have to. Opt for NgRx or RxJS.
React performs state management with the help of Redux or MobX.
This is where Angular and React are probably the most different. Angular uses two-way binding: when a UI element changes, the corresponding model state changes as well, and vice versa.
This is more suitable for a quick, not-so-large project.
React uses one-way binding only. Here you need to change the model state, and only then is the UI element re-rendered. It won’t work the other way around — you need to get your hands on it.
How to handle this?
- Use callbacks
- Use state management libraries (Redux, MobX)
Though this approach may be harder to grasp, it’s much more suitable when your project grows and results in a better data overview.
The Angular family offers Ionic as a solution for building mobile apps. Ionic uses Cordova, which is a container incorporated within Angular.
With Ionic, it is easy to develop cross-platform mobile applications. But the resulting app is just a web app instead of a native web view container. For that reason, the app could be laggy.
NativeScript is also an option, a counterpart to React Native.
Speaking of React, React Native is a Facebook platform for building native mobile applications. It allows for producing a truly native UI and building custom components.
To test Angular applications, you need to integrate it with a testing tool, for example Karma or Mocha. This takes time and demands particular skills.
You can use a standard tool called Jasmine, but developers often don’t like its outputs, which tend to be difficult to read.
It’s much easier to test a React application. Every React project can be fully tested with Jest, a framework that requires zero configuration to run. Frequently, it is used with Enzyme, another good testing library.
Businesses working with Angular and React
This list indicates that both React and Angular are popular among famous companies and large-caps.
Businesses working with Angular:
• General Motors
Businesses working with React:
Angular offers a complex and fixed app architecture, which will be most suitable for experienced developers.
The application, as well as one based on React, will be component-based. Each component is written in a separate file. TypeScript implements the component, an HTML file defines the view, and CSS code is responsible for the style of the app.
React allows for building your own app structure; there is no such thing as the “right” React application structure. This offers a huge benefit to those who want to control the whole application development process, but it does lengthen the time involved in developing a React app. Planning the structure takes time.
A short wrap-up for those who want to keep things simple:
– A full-fledged development framework
– Complex and takes time to master
– Powerful tool; once you learn it you are ready to develop
– Only a UI-library; can be turned into a complete development solution with third-party libraries
– Simpler to start, takes less time to start developing
– Still have to learn how to work with required third-party components
Our front-end developers are able to tackle both of these options. You need only choose what suits you best.
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