React vs Angular: A Comprehensive Side-by-Side Comparision

Relia Software

Relia Software

Huy Nguyen

Relia Software


React is a JavaScript library with more history than Angular. Angular is a comprehensive framework. React and Angular can both create single-page applications.

React vs Angular: A Comprehensive Side-by-Side Comparision

Table of Contents

Choosing the suitable JavaScript frameworks is pretty challenging. Especially when you have a wide range of resourceful and project-responsive solutions. Knowing various key factors is necessary to choose the appropriate one for your projects. In this post, we have fairly compared Angular with React to cover some key points that may be helpful for your choice.

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React VS Angular: Quick Comparison

React and Angular are both popular tools for making fancy websites. Even though they're a bit alike, they have some big differences. Before we get into the technical stuff, let's quickly look at both.

JavaScript-based library
Full-fledged structural framework
Build interactive UI components
Develop dynamic web apps
JavaScript (JSX script)
Developed & Maintained By
Meta and community
Front-end Development Approach
Uses XML-like syntax called JSX, slight preference for server-side rendering
Extends the functionality of HTML, prefers client-side rendering
Pretty fast because the virtual DOM quickly shows updates, making sure the website runs smoothly.
Dynamic UI Binding
Direct linking of states to the UI
UI binding at plain object or property level
App Structure
Flexible, component-based
Fixed and complex platform, component-based framework
Data Binding
Dependency Injection
Does not fully enable dependency injection, because each component has its own global state
Supports dependency injection, allowing for separate lifecycles for different stores
Learning Curve
Relatively small
Can be steep for beginners
Ideal Use Cases
Develop modern, extensive web applications with regularly changing data, and build hybrid apps that run smoothly on both Android and iOS devices.
Create intricate business applications, advanced single-page web applications, and websites.

Key Features of React

  • Declarative views.
  • JSX advantage.
  • Virtual DOM.
  • One-way data binding.
  • Building blocks flexibility.

Advantages of React

Let’s take a look at some benefits of React:

  • Reusable and more predictable code.
  • Easier debugging with declarative views.
  • Faster development time.
  • Enhanced developer productivity.
  • Easy migration between different versions.
  • Creating mobile apps using React Native.
  • Faster updates with both server-side and front-end support.
  • Improved load time and performance with efficiently built UI.
  • Integration with third-party libraries.

React shines in a variety of fields, including:

  • Single-page applications (SPAs) are apps that load just one HTML page and update it dynamically when users interact with the app. These apps are often built with React. It may also be used to create mobile apps using tools such as React Native.
  • Constructing reusable UI parts that can be employed in many spots is easy because of React's component-based structure.
  • React can efficiently refresh the UI without severely impacting performance by only rendering the sections of the DOM that have changed rather than the full DOM.
  • React is built to be adaptable, making it easy to interact with third-party frameworks and APIs.

React is a small tool that makes it much easier to build responsive, engaging front-ends.

Key Features of Angular

Angular is a complete redo of Angular (which is no longer updated) by the same group of Google engineers. Nevertheless, Angular gets regular updates and is supported by a huge community of developers.

  • Two-way data binding.
  • Dependency injection.
  • Virtual scrolling.
  • Angular CLI.
  • Built-in libraries.

Advantages of Angular

Now, let's explore advantages of Angular.

  • Strong encapsulation and an intuitive application structure.
  • Clean code development.
  • Simplicity in creating, managing, testing, and upgrading.
  • In-built features like Rxjs and AngularCLI.
  • Built-in assistance for HTTP, AJAX, and Observables.
  • Rapid rendering of server-side.
  • Support for views without rendering on the browser side.
  • Fewer lines of code required due to parallel running components.
  • Improved developer productivity.
  • Increased overall performance of the application.

Here are a couple of instances where Angular stands out:

  • Constructing a single-page application (SPA): A web application is considered to be a single-page application (SPA) if it just loads a single HTML page and then dynamically updates itself based on the actions that the user performs while using the app. Angular is a popular option for constructing Single Page Applications (SPAs).
  • Angular provides a powerful collection of features, such as support for reactive forms and validation, that may be used to create dynamic forms.
  • The router in Angular makes it easy to create and use advanced routing setups, like nested routes and lazy loading.
  • The dependency injection architecture and HTTP client in Angular make interacting with APIs and other backend services easy. Connecting to service APIs in the backend.
  • Using Angular, integrating WebSockets and other real-time technologies for better functionality is straightforward.

Angular is a strong and feature-packed framework that is great for developing intricate and scalable web applications.

>> Read more: Next.js vs Angular: What Are The Differences?

React VS Angular: Detailed Comparison

The comparison of React vs Angular is given below:

TypeReact is a JavaScript library with more history than Angular.Angular is a comprehensive framework.
Usage of LibrariesOther programming libraries can be packed with React JS.Angular is a stand-alone solution.
Learning CurveIt is simpler to learn than Angular. It is, however, tough to understand when combined with Redux.For beginners, learning Angular is difficult. As a result, extensive training is required.
Community SupportReact does not provide much in terms of community assistance.It boasts a stable and viable community support system.
Good FeatureIt takes longer to set up React. However, React is exceptionally fast for delivering projects and developing apps.It provides limited freedom and flexibility.
Data BindingOne-way data binding means that a UI element cannot change the state of a component.It supports one-way and two-way data binding, implying that if we alter the UI input, the model state will update and vice versa.
Testing & DebuggingTo do various sorts of testing, a collection of tools is required.A single tool can perform testing and debugging for an entire project.
DocumentationsAlthough it is also updated regularly, the documentation is updated more quickly.The documentation is moving slower due to the continuing development process.
UpdatesReact updates are straightforward with scripts aiding migration.Angular aims for upgrades every six months, allowing sufficient time for necessary migration changes.
ApplicationsIf you want to create web, native and hybrid apps, React is for you.If you want to create an SPA (Single Page Application) or mobile app, you should use this framework.
Ideal solutionPerfect for current web development and native-rendering apps for Android and iOS devices.It is ideal for developing large-scale, feature-rich apps.
Written LanguageJavaScriptTypescript
Language PreferencesJSX – JavaScript XMLTypeScript
Companies’ UsageFacebook, Uber Technologies, Instagram, Netflix, Pinterest, etc.Wepay, Beam, Auto Trader, Mesh, Streamline Social, etc.
TemplateSX + J% (ES5/ES6)HTML + TypeScript
RestrictionReact gives you the opportunity to choose without sacrificing performanceBecause an angular framework is compassionate, it prevents you from employing huge models.
Usage of CodeReact allows you to manage code in the format of your choice.Many ready-to-use elements are included with Angular. However, it primarily derives from a single source. So, there are nameDaces and priority collisions.
DOMVirtual DOM - constructs a new virtual DOM whenever the DOM changes, compared to the previous one, modifying only the differences in the "real" DOM.When a new DOM is created, it compares it to the previous one and applies differences to the "actual" DOM, allocating memory only when necessary.
Dependency InjectionBecause each component has its global state, React does not entirely support dependency injection.Dependency injection is enabled, allowing for multiple store life cycles.
UI ComponentsMaterial-UI Library and Dependencies - Community-created UI tools offer diverse UI components.Material Design Components - Angular includes numerous material design components that simplify UI configuration.
ModelBased on Virtual DOMBased on MVC (Model View Controller)


Both Angular and React are good at making fast web apps.

React: React has a virtual DOM, a cool feature that speeds up applications. It lets developers make changes without rewriting the whole webpage, making updates and data refreshes quicker. React's component reusability is a big advantage.

It allows developers to reuse parts of the code in different projects, saving time and making things consistent and easy to maintain. This is useful for both developers and designers working on various projects. Overall, React's practices lead to consistent app performance and good code quality, no matter how complex the project is.

Angular: Angular helps you write efficient code and continuously improves performance. It's good at optimizing the code structure, making it easier to manage changes. Older versions of Angular are suitable for projects that don't need two-way data binding, simplifying things. Angular uses real DOM but has a special way of detecting changes, making web apps faster.

Data Binding

Angular and React handle data differently.

React: React uses one-way data binding. Changes in the model state update the interface. It gives developers more control over web and mobile apps. While React doesn't automatically bind data, it uses one-way binding with helpers for handling complex data tasks.

Angular: Angular uses two-way data binding. When something changes in the interface, it automatically updates the model state, and vice versa. This is great for complex software like medical or accounting apps, making it easy to fetch data efficiently.

Server-side Rendering

React: For optimal SEO performance, rendering the application on the server is necessary. React achieves this effortlessly through specific functions. Instead of using Render, you can accomplish it by invoking the RenderToString function. Unlike other JavaScript frameworks, React is not that rigid a library and offers substantial flexibility.

Alternatively, you can utilize renderToStaticMarkup to skip the creation of DOM attributes like data-react-id, which proves useful in crafting a straightforward static page generator. Facebook, a prime example of a React application, demonstrates rapid rendering even under subpar internet connections and enhanced functionalities.

Angular: By employing server-side rendering, Angular generates a static view of the application before it becomes fully interactive. How efficiently you leverage the combination of JSON and client-side caching to enhance server-side performance is in your hands. Angular excels in minimizing the communication between the client and server.


React: Testing in React involves mocking parts that aren't in testing environments. Mocking helps predict how different parts of the function will interact. React's testing is predictable due to the availability of mocking functions. It continuously runs test suites during development using test runners like Mocha, Ava, and Jest.

Angular: Testing in JavaScript can be tricky, but Angular makes it easier with features like isolated unit code and built-in dependency injection. It's designed with testing in mind, allowing easy separation of components for testing and mocking. Angular provides a single tool for testing and debugging the entire app project.

Optimizing Bundle Size

The bundle file, downloaded when a webpage loads, affects how quickly a page appears.

React: bundle size is crucial for smooth app performance, especially in larger apps. Code-splitting and compression help optimize bundle sizes without affecting performance.

Angular: the bundle size is crucial, and using Ahead-of-Time (AOT) compilation during the build phase can speed up rendering. This process converts Angular code into efficient JavaScript before the browser runs it.

Learning Curve

React: React's learning curve is simpler. Basic concepts like writing components and managing states are key. While it might feel a bit unusual at first, React is favorable for its simplicity, and learning the basics along with state management prepares developers to build applications.

Disadvantages of React:

  • People using React need to understand how the Model-View-Controller setup affects user interaction.
  • React can be complex when combined with traditional Model-View-Controller architecture.

Angular: Learning Angular involves covering various topics, from basics like directives and components to more complex concepts. The learning curve is initially higher than React, but it offers advantages, especially for solving complex problems in large-scale applications.

Disadvantages of Angular:

  • There are many versions of Angular, which might be confusing.
  • Angular can be challenging for newcomers due to its steep learning curve.
  • The official Angular website's documentation is not easy to understand.
  • It fit with search engine optimization.
  • Debugging can be tough with limited routing scopes.

Both Angular and React have a lot to offer, making it challenging to choose. Consider the project requirements. Angular excels in solving complex problems in large-scale applications, while React offers simplicity and is in high demand among developers.

When To Choose React?

React stands out as the top framework for crafting platform-specific versions of components. Because of platform-specific version development, developers can create a single codebase shared across multiple platforms. Choosing the React framework for your applications ensures long-term effectiveness, high quality, and robustness. React can handle various tasks, such as building intricate native Android or iOS apps, making it the preferred JavaScript framework for constructing and integrating powerful user interfaces within applications.

Consider using the React framework for your project based on the following criteria:

  • Your app has many events.
  • Your application development staff is knowledgeable in HTML, CSS, and JavaScript.
  • Your app aims to be a unique solution.
  • The software includes shareable components.

When To Choose Angular?

Angular tends to be more dynamic in project development. The primary benefit of Angular is that it ensures secure data binding to HTML components that both programmers and end users can use. Another important factor in the success of this framework was the discovery of how to produce HTML and CSS modular components using Angular directives.

Attractive features like AJAX support, two-way binding, modularization, and dependency injection can be incorporated into a digital project.

Furthermore, Angular can be used to implement the following capabilities:

  • You must ensure increased productivity.
  • You need an immediate turnkey solution for your project..
  • Your goal is to create a fully functional app.
  • Your team has experience with programming languages like Java, C#, or previous versions of Angular.

>> Read more:

React VS Angular: Which One is Better?

React and Angular can both create single-page applications, but they're like different tools. People may argue about which one is better: React or Angular. Technically, React is considered superior because of its modern features like Virtual DOM and rendering improvements. React is flexible, and developers find its solutions adaptable.

Upgrading to a newer React version is easier compared to switching between frameworks, and you don't need to manually apply each update. Both Angular and React have their own features, capabilities, and requirements. They both work well for single-page applications and serve their purposes. The noticeable difference is in how the tools (frameworks) are shaped.

Many professionals share opinions online about React vs Angular, but the best choice depends on your needs. Both frameworks can handle complex tasks. Consider your project's requirements and usage to make the decision. Regardless of the React vs Angular debate, choose based on how well they meet your project's functional and usability needs.

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