What is wrong in the following React code?

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What is wrong in the following React code?

Asked 1 year ago

1function Counter() {
2  const [count, setCount] = useState();
3  return (
4    <button onClick={() => setCount(count + 1)}>
5      Clicked {count} times
6    </button>
7  );
8}

1function Counter() {
2  const [count, setCount] = useState();
3  return (
4    <button onClick={() => setCount(count + 1)}>
5      Clicked {count} times
6    </button>
7  );
8}

react

javascript

1 Answer

Krishna

• answered 1 year ago

useState must be initialized with a value (e.g., 0).

1const [count, setCount] = useState(0);

1const [count, setCount] = useState(0);

Also, TypeScript users should provide a type.

1const [count, setCount] = useState<number>(0);

1const [count, setCount] = useState<number>(0);

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