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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> <p>Click the buttons to get or set the volume of the audio player.</p> <button onclick="getVolume()" type="button">What is the volume?</button> <button onclick="setHalfVolume()" type="button">Set volume to 0.2</button> <button onclick="setFullVolume()" type="button">Set volume to 1.0</button> <script> var x = document.getElementById("myAudio"); function getVolume() { alert(x.volume); } function setHalfVolume() { x.volume = 0.2; } function setFullVolume() { x.volume = 1.0; } </script> </body> </html>