tryhtml5_av_event_volumechange2 在线代码实例

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<!DOCTYPE html> 
<html> 
<body> 
<p>尝试改变音频的音量。</p>
<audio id="myAudio" controls>
  <source src="/statics/demosource/horse.ogg" type="audio/ogg">
  <source src="/statics/demosource/horse.mp3" type="audio/mpeg">
  您的浏览器不支持 HTML5 video 标签。
</audio>
<script>
var aud = document.getElementById("myAudio");
aud.onvolumechange = function() {
    alert("音量已改变");
};
</script>
</body> 
</html>
 
 
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运行结果
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