在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
</head> 
<body>

<video id="myVideo" width="320" height="240" controls>
	<source src="movie.mp4.html" type="video/mp4">
  	<source src="movie.ogg.html" type="video/ogg">
  	您的浏览器不支持 video 标签。
</video>
<p>点击按钮获得首个以秒计的视频可寻址范围（部分）。</p>
<p id="demo"></p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
	var x = document.getElementById("myVideo");
	document.getElementById("demo").innerHTML = "Start: " + x.seekable.start(0) + " End: " + x.seekable.end(0);
}
</script>

</body>
</html>
源代码

动行结果
