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<!DOCTYPE html> <html> <body> <object data="horse.wav"> <param id="myParam" name="autoplay" value="true"> </object> <p>Click the button to return the value of the name attribute of the parameter.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myParam").name; document.getElementById("demo").innerHTML = x; } </script> </body> </html>