React Js Get Position of first occurrence of Empty String in Array

<!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, useEffect } = React;
    function App() {
      const array = ["apple", "", "banana", "cherry", ""];
      const emptyStringIndex = array.findIndex(item => item === "");

return (
        <div className='container'>
          <h2>React Js Get Position of first occurrence of Empty String in Array</h2>
          <h4 className='title'>Array: {JSON.stringify(array)}</h4>
          {emptyStringIndex !== -1 ? (
            <p className='message'>The position of the first empty string is {emptyStringIndex}</p>
          ) : (
            <p className='message'>No empty strings found in the array.</p>
          )}
        </div>

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

.container {
      margin: 0 auto;
      width: 600px;
      text-align: center;
      box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
      padding: 20px;
    }

.title {
      font-size: 24px;
      margin-bottom: 20px;
      color: #333;
    }

.message {
      font-size: 18px;
      color: #555;
      margin-top: 10px;
    }

.message:not(:first-child) {
      margin-top: 20px;
    }
  </style>
</body>

</html>

 
<!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, useEffect } = React;
    function App() {
      const array = ["apple", "", "banana", "cherry", ""];
      const emptyStringIndex = array.findIndex(item => item === "");
​
      return (
        <div className='container'>
          <h2>React Js Get Position of first occurrence of Empty String in Array</h2>
          <h4 className='title'>Array: {JSON.stringify(array)}</h4>
          {emptyStringIndex !== -1 ? (
            <p className='message'>The position of the first empty string is {emptyStringIndex}</p>
          ) : (
            <p className='message'>No empty strings found in the array.</p>
          )}
        </div>
​
      );
    }
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>
​
  <style>
    * {
      box-sizing: border-box;
    }
​
    .container {
      margin: 0 auto;
      width: 600px;
      text-align: center;
      box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
      padding: 20px;
    }
​
    .title {
      font-size: 24px;
      margin-bottom: 20px;
      color: #333;
    }
​
    .message {
      font-size: 18px;
      color: #555;
      margin-top: 10px;
    }
​
    .message:not(:first-child) {
      margin-top: 20px;
    }
  </style>
</body>
​
</html>