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<p>Click the button to trigger the popup!</p> <button onclick="openInteractivePopup()">Learn More</button> <script> // Function to open a popup and control its content and behavior function openInteractivePopup() { // Open a new window with specific dimensions let popup = window.open("", "InteractivePopupExample", "width=400,height=400"); // Write more complex and interactive content into the popup popup.document.write(` <h1>Interactive Popup</h1> <p>Click the button to change this message.</p> <button onclick='document.write("<h1>Content Updated!</h1><p>Thanks for interacting.</p>");'>Update Content</button> `); popup.document.close(); // Good practice to close the document stream } </script>