React Js Get Position of maximum element in list

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
  <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
  <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState, useEffect } = React;

function App() {
      const numbers = [5, 8, 2, 10, 3];
      const [maxPosition, setMaxPosition] = useState(null);
      const [maxValue, setMaxValue] = useState(null);

useEffect(() => {
        const maxVal = Math.max(...numbers);
        const maxPos = numbers.indexOf(maxVal);

setMaxPosition(maxPos);
        setMaxValue(maxVal);
      }, []);

return (
        <div className='container'>
          <h1>REACT Js - GET Position of maximum element in list</h1>
          <h3>List of Numbers: {numbers.join(', ')}</h3>
          {maxPosition !== null && (
            <p>
              The maximum element is {maxValue}, and its position is {maxPosition}.
            </p>
          )}
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    .container {
      width: 600px;
      margin: 0 auto;
      box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px;
      padding: 20px
    }
  </style>
</body>

</html>

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<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
  <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
  <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState, useEffect } = React;
​
    function App() {
      const numbers = [5, 8, 2, 10, 3];
      const [maxPosition, setMaxPosition] = useState(null);
      const [maxValue, setMaxValue] = useState(null);
​
      useEffect(() => {
        const maxVal = Math.max(...numbers);
        const maxPos = numbers.indexOf(maxVal);
​
        setMaxPosition(maxPos);
        setMaxValue(maxVal);
      }, []);
​
      return (
        <div className='container'>
          <h1>REACT Js - GET Position of maximum element in list</h1>
          <h3>List of Numbers: {numbers.join(', ')}</h3>
          {maxPosition !== null && (
            <p>
              The maximum element is {maxValue}, and its position is {maxPosition}.
            </p>
          )}
        </div>
      );
    }
​
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    .container {
      width: 600px;
      margin: 0 auto;
      box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px;
      padding: 20px
    }
  </style>
</body>
​
</html>