html运行实例（event_onprogress）-搜寻教程库

代码示例：（标识：event_onprogress）

<!DOCTYPE html> 
<html> 
<body> 

<video controls onprogress="myFunction()">
  <source src="/static/demo/video/shanghai.mp4" type="video/mp4">
  Your browser does not support HTML5 video.
</video>


<script>
function myFunction() {
  alert("Downloading video");
}
</script>

</body> 
</html>