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> 

<p>浏览器是否支持播放 MP4 视频? <span>
<button onclick="supportType(event,'video/mp4','avc1.42E01E, mp4a.40.2')" type="button">测试</button>
</span></p>
<p>浏览器是否支持播放 OGG 视频? <span>
<button onclick="supportType(event,'video/ogg','theora, vorbis')" type="button">测试</button>
</span></p>
<script> 
function supportType(e,vidType,codType){ 
	var x = document.createElement("VIDEO");
  	isSupp = x.canPlayType(vidType+';codecs="'+codType+'"');
  	if (isSupp == ""){
    	isSupp = "No";
    }e.target.parentNode.innerHTML = "结果: " + isSupp;
} 
</script> 

</body> 
</html>
源代码

动行结果
