Difference between Node.js and React.js - GeeksforGeeks

29 Jan, 2021
Node.js: Node.js is an open-source and cross-platform runtime environment for executing JavaScript code outside a browser. You need to remember that NodeJS is not a framework and it’s not a programming language. Most people are confused and understand it’s a framework or a programming language. We often use Node.js for building back-end services like APIs like Web App or Mobile App.
Features of Node.js:  There are other programming languages also which we can use to build back-end services so what makes Node.js different I am going to explain.
It’s easy to get started and can be used for prototyping and agile developmentIt provides fast and highly scalable servicesIt uses JavaScript everywhere so it’s easy for a JavaScript programmer to build back-end services using Node.jsSource code cleaner and consistent.Large ecosystem for open source library.It has an Asynchronous or Non-blocking nature.
It’s easy to get started and can be used for prototyping and agile development
It provides fast and highly scalable services
It uses JavaScript everywhere so it’s easy for a JavaScript programmer to build back-end services using Node.js
Source code cleaner and consistent.
Large ecosystem for open source library.
It has an Asynchronous or Non-blocking nature.
Code: Here is an example of how to include the HTTP module to build the server.
Filename: App.js
Javascript
var http = require('http'); // Create a server object:http.createServer(function (req, res) {     // Write a response to the client    res.write('GeeksforGeeks');     // End the response    res.end(); // The server object listens on port 8080}).listen(8080);
Output: For compiling the nodejs file go to terminal and follow the command:
node foldername.js
Now, open the localhost:8080 in your browser to see the output
ReactJS: It is an open-source JavaScript library for building single-page user interfaces. It is declarative, efficient, flexible, and allows us to create reusable UI components, it used as a base in single-page, complex, interactive web projects, and react components are difficult to reuse. The virtual DOM algorithm of React is a time-consuming and imprecise writing code. A React application is made of multiple components, each responsible for rendering a small, reusable piece of HTML. Components can be nested within other components to allow complex applications to be built out of simple building blocks.
Features of React.js: Here are some features that make React.js different from other programming languages:
React components have reusable codes that make it simple to use and learn.
React library has JSX (JavaScript XML), which is HTML like syntax, which is processed into JavaScript calls.
React components are reusable which helps while working on larger scale projects and has their own logic and controls.
One-way data binding provides better control throughout the application.
The virtual DOM uses the ReactDOM library which ideally/virtually, represents UI and keeps in the memory and syncs with the real DOM.
DOM has a smoother and faster performance due to virtual components.
Create a react app project and edit the App.js file in src folder as:
FilePath:- src/App.js:
Javascript
import React, { Component } from 'react'; class App extends Component {   render() {    return (      <div className="App">      <>          <h1>Hello from GeeksforGeeks!!</h1>      </>      </div>    );  }}export default App;
  Output:
Difference between Node.js and React.js:
 
 
bunnyram19
shubhamyadav4
Node.js-Misc
react-js
Node.js
Web Technologies
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.
Node.js fs.writeFile() Method
Node.js fs.readFile() Method
How to install the previous version of node.js and npm ?
Difference between promise and async await in Node.js
How to use an ES6 import in Node.js?
Remove elements from a JavaScript Array
Convert a string to an integer in JavaScript
How to fetch data from an API in ReactJS ?
How to insert spaces/tabs in text using HTML/CSS?
Difference between var, let and const keywords in JavaScript