Install Laravel by using below command.
composer create-project laravel/laravel laravel-react
composer require laravel/ui
php artisan ui react
Create the User component inside the components folder like below path.

import React from "react";
import ReactDOM from "react-dom";
function User() {
return (
<div className="container mt-5">
<div className="row justify-content-center">
<div className="col-md-8">
<div className="card text-center">
<div className="card-header">
<h2>React Component in Laravel</h2>
</div>
<div className="card-body">
Welcome to react components
</div>
</div>
</div>
</div>
</div>
);
}
export default User;
// DOM element
if (document.getElementById("user")) {
ReactDOM.render(<User />, document.getElementById("user"));
}
Change the routes/web.php file.
<?php
use Illuminate\Support\Facades\Route;
/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', function () {
return view('index');
});
Replace the welcome.blade.php with index.blade.php .
<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Laravel</title>
<!-- Styles -->
<link href="{{ asset('css/app.css') }}" rel="stylesheet">
</head>
<body>
<!-- React root DOM -->
<div id="user"></div>
<!-- React JS -->
<script src="{{ asset('js/app.js') }}" defer></script>
</body>
</html>
Install Laravel mix.
npm install
npm run dev
npm run watch
Check the webpack.mix.js file
const mix = require('laravel-mix');
/*
|--------------------------------------------------------------------------
| Mix Asset Management
|--------------------------------------------------------------------------
|
| Mix provides a clean, fluent API for defining some Webpack build steps
| for your Laravel application. By default, we are compiling the Sass
| file for the application as well as bundling up all the JS files.
|
*/
mix.js('resources/js/app.js', 'public/js')
.react()
.sass('resources/sass/app.scss', 'public/css');
Now React has been successfull installed in laravel. Now run the below command to run the laravel react project
php artisan serve
Open the below command in browser
http://127.0.0.1:8000/

Download installed laravel React Setup from this github link.
https://github.com/jeetu-sah/laravel-react