<div id="app"></div>
function App (){
const [count, setCount] = React.useState(0);
// 請謹慎開啟註解,要有心理準備電腦會當機
// React.useEffect(() => {
// setCount((pre) => pre + 1);
// }, [ count ])
return (
<div>
{ count }
</div>
)
}
const app = document.querySelector('#app');
const root = ReactDOM.createRoot(app);
root.render(<App />);
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