<!DOCTYPE html>
<html>
<body>
<audio id="myAudio" controls>
<source src="/i/audio/song.mp3" type="audio/mpeg">
<source src="/i/audio/song.ogg" type="audio/ogg">
您的浏览器不支持 audio 元素。
</audio><br><br>
<button onclick="getPlaySpeed()" type="button">播放速度是多少？</button>
<button onclick="setPlaySpeed()" type="button">将音频设置为慢速播放</button>
<script>
var x = document.getElementById("myAudio");
function getPlaySpeed() { alert(x.playbackRate);
}
function setPlaySpeed() { x.playbackRate = 0.5;
}
</script>
</body>
</html>