ontimeupdate属性事件在媒体（例如视频）的播放位置改变时触发。它可以在视频或音频中快进或快退。
您可以尝试运行以下代码实现ontimeupdate 属性 -
<!DOCTYPE html>
<html>
<body>
<h2 id="test">Play</h2>
<video id = "myid" width="320" height = "176" controls ontimeupdate = "myFunction()">
<source src = "/html5/foo.ogg" type = "video/ogg" />
<source src = "/html5/foo.mp4" type = "video/mp4" />
Your browser does not support the video element.
</video>
<script>
function myFunction() {
document.getElementById("test").innerHTML = "Current position: " +
document.getElementById("myid").currentTime;
}
</script>
</body>
</html>
