Code Mosh React 18 Beginners Fco Better [new] May 2026

const Counter = () => { const [count, setCount] = useState(0);

export default App; To see automatic batching in action, you can modify Counter.tsx to include a function that updates state and then uses fetch to make an API call:

import React, { useState } from 'react';

const handleClick = async () => { // Before React 18, setCount would not batch with async code // Now, React 18 automatically batches updates setCount(count + 1); await fetch('https://example.com/api/data'); // State updates here will batch with the previous setCount };

const LazyLoadedComponent = lazy(() => import('./LazyLoadedComponent'));

import React, { lazy, Suspense } from 'react'; import './App.css'; import Counter from './Counter';

import React, { useState } from 'react';

function App() { return ( <div className="App"> <header className="App-header"> <Counter /> <Suspense fallback={<div>Loading...</div>}> <LazyLoadedComponent /> </Suspense> </header> </div> ); }