Question 193754 in Javascript Question posted in
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Javascript – Updating in react with useState hook

I’m trying to update the person which i get the data from people [array] let [person, setPeople] = useState(people);

why if I make this setPeople(person[0]) not work

I just a beginner in react and i know that’s a stupid question but i’m trying to explore

I tried to undertstand why it just take the whole person not an index but i can’t

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2

Answers


  1. 0

    You have to decide if your state should contains one person or all people.
    In your code You mixed it.
    e.g. that would be okey:

     const[person, setPerson] = useState(people[0]);
 setPerson(person[0])

    Also in 99.9% of times You should use const for state instead of let.

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  2. 0

    It would be great, if we had a minimal-reproducible-example

    Please find below a simple useState example, hope this helps. 🙂

    import { useState } from 'react';

export default function Counter() {
  const [count, setCount] = useState(0);

  function handleClick() {
    setCount(count + 1);
  }

  return (
    <button onClick={handleClick}>
      You pressed me {count} times
    </button>
  );
}
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