Features of React js

1. JSX(JavaScript Syntax Extension) or XML

JSX is an abbreviation for JavaScript XML. It's a Javascript syntax extension. ReactJS is written in an XML or HTML-like syntax. This syntax is converted into JavaScript calls in the React Framework. It extends ES6 to enable the coexistence of HTML-like text and JavaScript to react code. It is not necessary.

2. Virtual DOM

This is one of the best features of React js, which speeds up the app development process while still providing flexibility. DOM stands for Document Object Model. The approach allows a web page to be replicated in React's virtual memory. A virtual DOM object represents the original DOM object. The function is the same as in one-way data binding. The complete User Interface is re-rendered in virtual DOM representation whenever changes are made in the web application. After that, it compared the old DOM representation to the new DOM representation and where the true DOM will only update the elements that have changed.

3. One-way Data Binding

ReactJS follows unidirectional data flow, also known as one-way data binding. React uses a unidirectional data flow, forcing developers to use the callback function to edit components rather than directly altering them. Flux is a JS app design component that allows you to control data flow from a single point. Flux is a pattern that allows for data unidirectionality. Developers have more control over the software, making it more versatile and effective.

4. Component-Based Architecture

This implies that the user interface of a React JS-based app comprises numerous components, each of which has its functionality written in JS. These components are reusable, making it easier to keep the code clean while working on larger projects. As a result, developers can send data across the app without affecting the DOM. React JS components heavily influence the app's graphics and interactions. This forms one of the best features of React js.

5. Performance

ReactJS is well-known for its speed. These characteristic sets React apart from the other frameworks which are available today. This is because it controls a virtual DOM. The Document Object Model (DOM) is a computer programming API for HTML, XML, and XHTML that is cross-platform. The DOM exists solely in memory. As a result, when creating a component, we did not write directly to the DOM. Instead, we will create virtual components that will be converted into the DOM, resulting in smoother and faster performance.

6. Simplicity

ReactJS uses a JSX file, which makes the application easy to code and comprehend. ReactJS is a component-based approach, which means the code may be reused as needed. React.js makes use of JSX, a hybrid of HTML and JavaScript. This reduces the amount of code and makes it easier to understand and debug.

Let's create a simple React.js application step-by-step to see how it works.

Step 1: Open your terminal and run following commands:

cmd

npx create-react-app counter-app
cd counter-app

Step 2: Edit the App component

Javascript

• javascript

javascript

import React, { useState } from 'react';
import './style.css';
export function App() {
 const [count, setCount] = useState(0);
 const increment = () => {
   setCount(count + 1);
 };
 const decrement = () => {
   setCount(count - 1);
 };
 return (
   <div className="App">
     <header className="App-header">
       <h1>Counter App</h1>
       <p>Current Count: {count}</p>
       <button onClick={increment}>Increment</button>
       <button onClick={decrement}>Decrement</button>
     </header>
   </div>
 );
}
export default App;

You can also try this code with Online Javascript Compiler

Run Code

Optional Step: Adding some styling

css

body {
  background: transparent; /* Make it white if you need */
  padding: 0 24px;
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}


.App {
  color: #72a24d;
}

Step 3: Run the Application

cmd

npm start

Output: 

In this example, we use the useState hook to manage the state of the counter. When the "Increment" or "Decrement" buttons are clicked, the setCount function is called to update the counter value, triggering a re-render of the component.

Steps to Create React Application

Creating a React application involves several steps to set up the development environment and initialize a new project. Below are the general steps to create a React application using the create-react-app tool:

1. Install Node.js and npm: Ensure that you have Node.js and npm (Node Package Manager) installed on your system. You can download and install Node.js from the official website: https://nodejs.org/

2. Install create-react-app: Open your terminal or command prompt. Run the following command to install create-react-app globally:

npm install -g create-react-app

3. Create a new React application: Once create-react-app is installed, you can create a new React application by running the following command:

npx create-react-app my-react-app

Replace my-react-app with the desired name for your React application.

4. Navigate to the project directory: Change into the newly created directory for your React application:

cd my-react-app

5. Run the development server: Once inside the project directory, you can start the development server by running:

npm start

This command will start the development server and open your default web browser with the React application running. By default, the server runs on port 3000.

6. Start coding your React application: You can start coding your React application by editing the files in the src directory. The src directory contains the main files for your React components, including App.js, index.js, and other components. You can create new components, modify existing ones, and add styles or other assets as needed.

7. Build your React application for production: When you're ready to deploy your React application, you can build it for production using the following command:

npm run build

This command will create an optimized production build of your application in the build directory, which you can then deploy to a web server or hosting service.

Difference between React.js and Node.js

Below are the differences between React and Node js.

Check out Advantages of React JS here.

Why do people choose to program with React?

Considering React for your project? Here's why it's an excellent choice: 

• React's easy learning curve accelerates project development; it excels at creating captivating user interfaces, pivotal for app success. 
   
• Craft reusable components effortlessly with JSX, enhancing efficiency. 
   
• The component reusability ensures smoother updates and heightened developer productivity. Thanks to its virtual DOM, React boasts rapid rendering and strong performance.
   
•  It's swift rendering also improves SEO rankings, while developer tools aid debugging. With a supportive community and code stability via controlled data flow, React has gained the trust from Fortune 500 companies like Airbnb and Netflix. 
   
• It offers toolkits, testing libraries, and extensions for a convenient coding experience. In essence, React's simplicity, potency, and industry acceptance make it an optimal choice for front-end and mobile app development.

Frequently Asked Questions

What is the feature of ReactJS?

ReactJS features a component-based architecture, allowing developers to create reusable UI components, enhancing code maintainability and scalability.

What are the advantages of React?

React offers advantages such as virtual DOM for efficient rendering, component reusability, one-way data binding, and strong community support.

What is ReactJS used for?

ReactJS is primarily used for building dynamic user interfaces (UIs) for web applications, enabling developers to create interactive and responsive UI components.

Is ReactJS frontend or backend?

ReactJS is a frontend JavaScript library used for building user interfaces (UIs) and handling view layer logic in web applications. It operates on the client-side, making it a frontend technology.

Conclusion

So, we end our above blog here. Above, we have extensively discussed Web development Frameworks like React and Node. We first had a brief introduction to the React framework, after which we studied some important or best features of React js, which include the use of components, Performance, etc. Next, we had a brief discussion on the features of React and Node js Framework. We hope that this blog has helped you enhance your knowledge regarding React and Node.
You can also consider our React Js Course to give your career an edge over others.

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Happy Coding!