<html>
<body>
<video id="myVideo" width="320" height="240" controls>
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
您的浏览器不支持 video 标签。
</source></source></video><br>
<button onclick="getMuted()" type="button">视频是否默认静音?</button>
<button onclick="setToMuted()" type="button">设置视频默认静音，并重新载入视频</button>
<script>
var x = document.getElementById("myVideo");
function getMuted()
{
alert(x.defaultMuted);
}
function setToMuted()
{
x.defaultMuted = true;
x.load()
}
</script>
</body>
</html>