why when i put what i pass in props in useState i have an empty array?-CodePudding

in the child component , I can read the props data in the console.log but when i put the state data in useState and i put the state in a console.log , i have an empty array and i don't understand why ?

    const FicheUserDisplay = ({ data }) => {
console.log("-->data<--");
console.log(data);

const [state, setState] = useState(data);
console.log("-->State");

console.log("state dans composant Fiche User")
console.log(state);

  return (

CodePudding user response：

Try in this way, you are using antipattern for react environment

useEffect(() => {
    if (data) {
      setState(data);
    }
  }, [data]);

CodePudding user response：

useState() is asynchronous and doesn't update immediately, like the comment says add the state as a parameter to useEffect()