Editar o código:
ver o resultado »
Tente você mesmo - ©
w3ii.com
<!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 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>