React Js Get Element by Id

<!DOCTYPE html>
<html>

</head>

<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState,useEffect } = React;

function App() {
     useEffect(() => {
        // This code will run after the component has rendered
        const element = document.getElementById('myElementId');

// Check if the element exists before accessing its content
        if (element) {
          const content = element.innerHTML;
          console.log(content); // You can log or use the content as needed
        }
      }, []); // The empty array [] as the second argument ensures this runs only once after initial render

return (
        <div className='container'>
          <h3>React Js Get Element by id</h3>
          <p id="myElementId">This is the content of the div.</p>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    /* Container */
    .container {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      text-align: center;
    }
  </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() {
     useEffect(() => {
        // This code will run after the component has rendered
        const element = document.getElementById('myElementId');
​
        // Check if the element exists before accessing its content
        if (element) {
          const content = element.innerHTML;
          console.log(content); // You can log or use the content as needed
        }
      }, []); // The empty array [] as the second argument ensures this runs only once after initial render
​
      return (
        <div className='container'>
          <h3>React Js Get Element by id</h3>
          <p id="myElementId">This is the content of the div.</p>
        </div>
      );
    }
​
    ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    /* Container */
    .container {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      text-align: center;
    }
  </style>
</body>
​
</html>