Tryit Editor v2.9

Edit This Code:
<!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="getPlaySpeed()" type="button">What is the default playback speed?</button>
<button onclick="setPlaySpeed()" type="button">Set video to be play fast</button>

<script>
var x = document.getElementById("myAudio");
function getPlaySpeed() { 
    alert(x.defaultPlaybackRate);
} 

function setPlaySpeed() { 
    x.defaultPlaybackRate = 2;
    x.load();
} 
</script> 

</body> 
</html>