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<!DOCTYPE html> <html> <body> <h3>A demonstration of how to access a DETAILS element</h3> <details id="myDetails"> Some additional details... </details> <p>Click the "Try it" button to show additional details.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { const x = document.getElementById("myDetails"); x.open = true; } </script> </body> </html>
