x
<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="getPlaySpeed()" type="button">What is playback speed?</button><button onclick="setPlaySpeed()" type="button">Set audio to be play in slow motion</button><script>var x = document.getElementById("myAudio");function getPlaySpeed() { alert(x.playbackRate);} function setPlaySpeed() { x.playbackRate = 0.5;} </script> </body> </html>