React Js Get First and Last Day of Current Week

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState } = React;
    function App() {
      const currentDate = new Date();
      const currentDay = currentDate.getDay();
      const firstDayOfWeek = new Date(currentDate);
      firstDayOfWeek.setDate(currentDate.getDate() - currentDay);
      const lastDayOfWeek = new Date(currentDate);
      lastDayOfWeek.setDate(currentDate.getDate() + (6 - currentDay));

const firstDayString = firstDayOfWeek.toISOString().slice(0, 10);
      const lastDayString = lastDayOfWeek.toISOString().slice(0, 10);

return (
        <div className='container'>
          <h3>React Js Get First and Last Day of the Current Week</h3>
          <p>First day of the week: {firstDayString}</p>
          <p>Last day of the week: {lastDayString}</p>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById("app"));
  </script>

.container {
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      text-align: center;
      max-width: 600px;
      margin: 0 auto;
    }
  </style>
</body>

</html>