tryhtml5_av_prop_volume 在线代码实例

 <button onclick="getVolume()" type="button">What is the volume?</button>
<button onclick="setHalfVolume()" type="button">Set volume to 0.2</button>
<button onclick="setFullVolume()" type="button">Set volume to 1.0</button>
<br> 
<video id="video1" controls="controls">
  <source src="/statics/demosource/mov_bbb.mp4" type="video/mp4">
  <source src="/statics/demosource/mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>

<script>
myVid=document.getElementById("video1");
function getVolume()
  { 
  alert(myVid.volume);
  } 
function setHalfVolume()
  { 
  myVid.volume=0.2;
  } 
function setFullVolume()
  { 
  myVid.volume=1.0;
  } 
</script> 

<p>Video courtesy of <a href="http://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>