JAVASCRIPT

react index.js

import React from "react";
import ReactDOM from "react-dom/client";
import "./index.css";
import App from "./App";
import reportWebVitals from "./reportWebVitals";

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
);

reportWebVitals();

react index.js

// index.js setup
import React from "react";
import ReactDOM from "react-dom/client";
import App from "./App";
import "./index.css";
import reportWebVitals from "./reportWebVitals";

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
);
reportWebVitals();


// APP.js Setup.........
import * as React from "react";
import { BrowserRouter, Route, Routes } from "react-router-dom";
import "./App.css";
import Home from "./Component/Home/Home";

function App() {
  return (
    <div className="App">
      <BrowserRouter>
       <Routes>
          <Route path="/" element={<Home />} />
       </Routes>
      </BrowserRouter>
    </div>
  );
}
export default App;

react index.jsx example

// REACT 18 index.tsx
import React from 'react';
import {createRoot} from 'react-dom/client';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';

const container = document.getElementById('root') as HTMLElement
const root = createRoot(container)
root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
)

// If you want to start measuring performance in your app, pass a function
// to log results (for example: reportWebVitals(console.log))
// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
reportWebVitals();

react index.jsx example

// REACT 18 index.jsx
import React from 'react';
import {createRoot} from 'react-dom/client';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';

const container = document.getElementById('root')
const root = createRoot(container)
root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
)

reportWebVitals();