import {useState} from 'react';
export default function App() {
const [title, setTitle] = useState('hello')
const [name, setName] = useState('')
const onChange = e => {
setName(e.target.value)
}
const clickHandler = () => {
setTitle(name)
}
return (
<div>
<button onClick={clickHandler}>Change Title</button>
<input type="text" onChange={onChange}/>
<h1>{title}</h1>
</div>
);
}