When the state in the child component has changed, how do I send these values ​​to the parent component?

Question

React

and how to do it with hooks

Answer 1

States in React are passed from top to bottom. (from parent to child). Typically, a parent component receives an action from a child component using functions.

const Parent= props =>{
  const [active, setActive] = useState(0);

  const onSeleсt = index =>{
    setActive(index); 
  };

  return <Items  active={active} onSelect={onSelect} {...props}/>;
}