html5在屏幕上显示track信息
<!DOCTYPE html>
<html lang="en">
<head>
<title>Working with Tracks</title>
<style>
#player, #info{
float: left;
}
</style>
<script>
function initiate(){
var list = "";
var info = document.getElementById('info');
var mytrack = document.getElementById('mytrack');
var obj = mytrack.track;
list += "<br>Kind: " + obj.kind;
list += "<br>Label: " + obj.label;
list += "<br>Language: " + obj.language;
info.innerHTML = list;
}
addEventListener('load', initiate);
</script>
</head>
<body>
<section id="player">
<video id="media" width="720" height="400" controls>
<source src="trailer.mp4">
<source src="trailer.ogg">
<track id="mytrack" label="English Subtitles" src="subtitles.vtt" srclang="en" default>
</video>
</section>
<aside id="info"></aside>
</body>
</html>
<!--该代码片段来自于: http://www.sharejs.com/codes/html/8312-->