Reactjs And Nodejs

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By Manish Patel | Wednesday, July 22, 2020 01:09 PM | 5min read. Are you planning on developing an app or a website? Then the biggest challenge you will face is a difference in frameworks. It is often an issue of different syntax at the backend and frontend framework.

Here, JavaScript can help you with two frameworks for your full-stack development plans. One is Nodejs and the other is ReactJs. Among many of the frameworks in JavaScript, Node.js is quite popular. According to the Stack Overflow report, Node.js is preferred by 49.9% of developers.

So, it is natural to choose the framework for your project.

Is ReactJS a framework?

But, when you are selecting a front-end development framework, React.Js becomes obvious.

Because it is also based on JavaScript and that is why there is no gap of syntax. Let’s take an example of website development through a combination of Node.js with React.Js. The first step toward app development is to create a project directory.

Difference between NodeJS and ReactJS

You can create one on your terminal. Create one through these codes. mkdir my_awesome_project. cd my_awesome_project. Next, we will create a front-end React.Js app.

React.Js is a Javascript library created by Facebook. So, you can just get to GitHub and choose to create-react-app for your React.Js app. npx create-react-app client. You can use npx for the creation of a React.Js app easily. If you don’t have enough technical knowledge then you can get professional React.Js development in India.

Npx is a tool created for the developers to extend the modules from the npm registry. It can help developers to use CLI tools and executables of the registry.

Next, you need to change the terminal directory into the client directory and start the app. Navigate the http://localhost:3000 URL in your browser and congratulations there you are with a basic React.Js app.

Most prominent features of Node.js:

Now let’s create a Node.js app. Here, we will use Express.Js.

  • It is a minimalist framework based on the Node.js framework.
  • It enables faster development and provides excellent features. We will create the app through the Express app generator.
  • You can use the following code for executing the app. npx express-generator API. Express generator from the npm’s npx- we all know npm as the Node Package Manager.
  • We will create an Express app and name it API. Create a client directory into the API.
  • Install all the features and dependencies. If all goes well we start the app. Next, you need to use a similar localhost URL as we used in the React.Js into your browser to enter the app.

Creating Your Directory:

So, now you have a backend app and a frontend app, it’s time for you to get the combination for your project. Routing helps application endpoints or say URLs to respond to the user’s requests. You need to define the routing of an Express.Js app. Professional developers use different code editors.

Here we are using VS Code editor. Step1: Use the API directory and go to bin/www.

Node.js usage statistics and popularity:

Edit the port on line 15 and enter 9000. So, when you will run the ReactJs app and Nodejs based Express app, there will be reduced bugs. Step2: Now create a testingAPI.Js inside the route and use the below code.

var express = require(“express”);. var router = express.Router(). router.get(“/”, function(req, res, next) {. res.send(“API is working properly”);.

module.exports = router;. Step3: Enter a new route in the code line 24. app.use(“/testAPI”, testAPIRouter);.

Step 4: Change the code in-line 9 and 25 to get your route as below. Now when you start can start the Node.js app through the API directory in the terminal. http://localhost:9000/testAPI is an online browser, and check whether it’s working properly or not.

Here’s how we can connect both apps for better results. Step1: Open the code editor, then go to the client directory and open the api.Js file.

How to connect Reactjs with Nodejs?

Step2: Next, you need to get data from the API, and paste this code into the editor after you declare all the classes.

  • constructor(props) {. this.state = { apiResponse: “” };. .then(res => res.text()). .then(res => this.setState({ apiResponse: res }));.
  • componentWillMount() {. Step3: Use the render method. Here, you need to find a <;p> tag.
  • Next, make some changes to make it render that it renders the API response:.


  • After all the changes are done, you will get the final code like this. We’re able to insert a constructor that can initialize the default state of the app.
  • We also inserted a method called call API() that can get data from your API and store the response to user requests in state.apiResponse.

We also executed a React lifecycle method,componentDidMount(), which is used by a ReactJS development company to execute call API() after the components are mounted.


I used the <;p> tag to represent the paragraph of text that we got from the API directory. You may think that it is done, but if you run both the apps together you may get such a message on your browser-.

“Failed to load http://localhost:9000/testAPI: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

Origin ‘http://localhost:3000′ is therefore not allowed access.

If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.”.

In order to remove this error, you need to add CORS to the Node.js app.

It stands for resources.

It allows data access to web applications running on one origin from a resource at a different origin.

It’s a set of additional HTTPS headers that direct the browser for such access to data for the web apps.

So, let’s do it then.

npm install –save cors.

var cors = require(“cors”);.

After these changes, your code will appear something like this.

  • So, you have connected both Nodejs and Reactjs to run them simultaneously for the frontend and backend.
  • Just connect one of the apps with a database like MongoDB and you are ready for your next big web app.
  • The rapid changes in the realm of app and web development have pushed developers to create more robust collaborations.
  • The React.Js development services rely on the extensive open-source community for ready-made components.
  • The compatibility of React with other JavaScript-based frameworks has gained traction.
  • So, there is no harm in choosing a React.Js development company for your UIs.
  • The powerful Nodejs, as we saw here, can easily merge with ReactJs to create efficient web apps and mobile applications.
  • So, don’t wait for your competitors to inspire your actions and use these technologies for your business growth.
  • If you have any queries related to this method, get in touch with us.
  • Manish Patel is a Co-Founder of Concetto Labs, a leading mobile app development company specialized in android and iOS app development.
  • We provide a one-stop solution for all IT related services.

Both Node.js and React.js are of JavaScript, yet both are completely different.

  • The main difference between Node.js and React.js is that Node.js is a back-end framework while React.js is used for user interface development for the app.
  • Yet, both have their cons and pros and unique use cases for mobile app development.
  • In this article, you will find the introduction of React JS and Node JS, their features, example for the app development and its difference.
  • Based on a detailed discussion on both the technologies, you can find the one you should use for your next software development.

Let's get started.

  • Node.js is one such framework that helps develop the back-end of applications with JavaScript. As per Google Chrome's V8 JavaScript engine powers, Node.js is more useful and lightweight.
  • Developers highly use it for event-driven and non-blocking I/O models. Specially to host APIs, access the database, and serve HTTP requests, developers use the Node.js framework.
  • Who uses Node.js? Node.js is used by the majority of companies and has multiple famous clients, such as Netflix, NASA, Trello, PayPal, LinkedIn, Walmart, Uber, Twitter, Yahoo, eBay, GoDaddy, and more.
  • Here we have who and why Node.js has evolved its framework of choice. If we talk about Netflix, they went through A/B testing to offer a reach experience to 93 million users.
  • And meanwhile, they faced some issues of conditional dependencies and app scalability. Here comes the role of Node.js to crack these issues; the company has chosen Node.js to offer fast speed and effective usage.

As a result, Netflix has reduced startup time by 70%.

Single-threaded: Node.js framework is lightweight still more scalable compared to other frameworks because it operates a single-threaded design with event loopings.

Overall, it helps to handle multiple requests compared to traditional servers like Apache HTTP Server.

Open Source: Node.js works as open-source for code as it is ready to use for free and available for the developer to use.

Enhanced Performance: If you want to develop an app with improved performance, choose Node.js.

  • It helps the developers complete non-blocking functions that boost the app's performance.
  • Scalability: Node.js is powerful and got the capability to scale up the app performance both horizontally and vertically.

No Buffering: Applications developed with Node.js will show performance in blocks due to its callback function.

  • So, the user receives the data faster and easily available with no waiting time for the operation to finish.
  • It overall lowers the processing time, and thus no buffer on data.
  • "As per the study and Node.js User Survey Report, most of 49.9% developers used Node.js and created it as most used frameworks, libraries, and tools in 2019.”.

Node js vs React js: Final Verdict

React.js is another famous technology that is open-source code library.

It is highly used to design the user interfaces or front-end web applications.

  • React.js can improve the speed and offer a dependable platform to serve the front-end. Also, React.js is developed by Facebook and has been enhanced for better performance.
  • Who are the people using React.js? Facebook, a known app that has allowed companies of all sorts, from content-driven websites like the New York times and Twitter as social media apps.

It has served the best User Interface with the help of React.js. A website like Facebook, Twitter and other entirely relies on interaction with the user and uses a dynamic framework.

Most prominent features of React.js:

Instagram, another associate of Facebook, is yet another illustration of an app created with React.js.

Easy Maintenance: React.js is easy to maintain as its library is brilliant, and it re-uses any crucial system elements.