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Getting Started With React: Building Your First React Application

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By Author: Komal
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The use of a virtual DOM in React enhances rendering, performing briskly and more effectively performance in comparison to traditional DOM manipulation ways. Its concentration on performance and reusability has made Reply a popular choice among inventors. In this companion, we'll go through the process of setting up an introductory React design and creating your first React element.

In the world of web development, React has had a profound impact, leading to the development of colourful libraries and tools that round and enhance its capabilities. Reply is used in combination with other technologies similar as React Router for routing, Redux for state operation, and colourful figure tools for creating important and interactive web operations. The reply is also frequently used to produce applicable UI factors, and it follows a declarative and element-grounded approach. One of the crucial features of React is its capability to efficiently modernize and render stoner interfaces, thanks to its virtual DOM (Document Object Model) medium, which minimizes direct commerce with the factual DOM and enhances performance.

Prerequisites

Before ...
... we start, make sure that you have the following tools installed in the system:

1. Node.js: React requires Node.js, a JavaScript runtime, to work. If it’s not available you can download from the sanctioned website.
2. npm (Node Package Manager): It comes bundled with Node.js, so there's no need to install it separately.

Setting up Your React Project

Let's start by creating a new React project. React provides a tool called "Create React App" that simplifies the setup process.

npx create-react-app my-react-app

Replace "my-react-app" with the desired name for the project. This command will create a new directory with the project's structure and install all the necessary dependencies.

Running Your React Application

After the project is created, then navigate to the project folder as follows:

cd my-react-app

To start the React application, run the command as follows:

npm start

This command will start the development server, and your React application will be available at ‘http://localhost:3000’ in your web browser.

Creating Your First React Component

Now your React project is up and running, let's create a simple React component. Open the src directory in your project folder and locate the App.js file. This is the default component that gets displayed in your application.

Let's modify the App.js file to create a basic component:

jsx
import React from 'react';

function App() {
return (

Welcome to My First React App
This is a simple React component.
We will see how to create the React Application


);
}

export default App;


In this example, we have created a functional component called App. It returns JSX (JavaScript XML), which defines the structure and content of the component.

Displaying Your Component

To display your new component, open the src/index.js file in your project folder. Modify it to look like this:

jsx
import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';

ReactDOM.render(


,
document.getElementById('root')
);

Now, save your changes, and you'll see your component being rendered in the browser.

You've successfully set up a React project and created your first React component. You can continue building your application by adding more components. React component-based architecture provides a flexible and efficient way to create complex user interfaces.

Conclusion

In this article, we have covered the basics of getting started with React. You've set up a new React project, created a simple component, and displayed it in a web application. Now you're ready to explore more advanced concepts and build interactive and dynamic user interfaces with React.


Credits- Komal Waghmare

MetricsViews Pvt. Ltd.
MetricsViews specializes in building a solid DevOps strategy with cloud-native including AWS, GCP, Azure, Salesforce, and many more. We excel in microservice adoption, CI/CD, Orchestration, and Provisioning of Infrastructure - with Smart DevOps tools like Terraform, and CloudFormation on the cloud.

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