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<!DOCTYPE html> <html> <body> <audio id="myAudio" controls> <source src="horse.ogg" type="audio/ogg"> <source src="horse.mp3" type="audio/mpeg"> Your browser does not support the audio element. </audio><br> <button onclick="enableControls()" type="button">Enable controls</button> <button onclick="disableControls()" type="button">Disable controls</button> <button onclick="checkControls()" type="button">Check controls status</button> <script> var x = document.getElementById("myAudio"); function enableControls() { x.controls = true; x.load(); } function disableControls() { x.controls = false; x.load(); } function checkControls() { alert(x.controls); } </script> </body> </html>