How can text formatting be incorporated into a PHP form using JavaScript?

To incorporate text formatting into a PHP form using JavaScript, you can use a JavaScript library like Quill or CKEditor. These libraries allow users to format text within a form input or textarea. By integrating these libraries into your PHP form, users can easily apply formatting such as bold, italic, underline, and more to their text inputs.

<!DOCTYPE html>
<html>
<head>
  <script src="https://cdn.quilljs.com/1.3.6/quill.js"></script>
  <link href="https://cdn.quilljs.com/1.3.6/quill.snow.css" rel="stylesheet">
</head>
<body>
  <form method="post" action="submit.php">
    <div id="editor"></div>
    <input type="hidden" name="formatted_text" id="formatted_text">
    <button type="submit">Submit</button>
  </form>

  <script>
    var quill = new Quill('#editor', {
      theme: 'snow'
    });

    var form = document.querySelector('form');
    form.onsubmit = function() {
      var html = document.querySelector('.ql-editor').innerHTML;
      document.getElementById('formatted_text').value = html;
    };
  </script>
</body>
</html>