react hooks call child fuynction
export default function Parent() { const myref=useRef(); const handleOnClick = () => { if(myref.current) { myref.current.sayHi(); } } return ( <Child ref={myref} /> <button onClick={handleOnClick}>Click me</button> ); } export default function Child() { const sayHi = () => { console.log('hi'); }; return (<div>Hello</div>); }