网络状态检测

• HTML

  <video id="myvideo" src="../video/4_1.mp4" onPlay="checkLoad()" controls> </video>
  <p> <span id="result">123</span> </p>
  					    

• JS

  function checkLoad()
  {
  	var video = document.getElementById("myvideo");
  	var state = video.readyState;
  	var result = document.getElementById("result");
  	if (state=="0")
  	{
  		result.innerHTML="无可播放媒体";
  	}
  	else if (state=="1")
  	{
  		result.innerHTML="无法播放媒体信息";
  	}
  	else if (state=="2")
  	{
  		result.innerHTML="无法获取后续媒体信息";
  	}
  	else if (state=="3")
  	{
  		result.innerHTML="已获取后续媒体信息，正常播放";
  	}
  	else
  	{
  		result.innerHTML="已充分获取媒体信息资源";
  	}
  }
  					    

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