我如何调试自己的视频,因为目前没有出现警报。我用的是IE9,播放器是jwplayer。我是否遗漏了某些东西,或者我是否将用于调试的 javascript 代码放在了错误的位置,因为我试图将它放在 jwplayer 元素的下方和上方。我应该在单击播放时看到警报还是应该立即出现?
<div id="myElement">Loading the player...</div>
<?php echo 'This is the videoPath '.$dbVideoFile; ?>
<script type="text/javascript">
    jwplayer("myElement").setup({
        file: "<?php echo $dbVideoFile; ?>",
    });
var myvid = document.getElementById('myElement');
if (myvid.error) {
 switch (myvid.error.code) {
   case MEDIA_ERR_ABORTED:
      alert("You stopped the video.");
      break;
   case MEDIA_ERR_NETWORK:
      alert("Network error - please try again later.");
      break;
   case MEDIA_ERR_DECODE:
      alert("Video is broken..");
      break;
   case MEDIA_ERR_SRC_NOT_SUPPORTED:
      alert("Sorry, your browser can't play this video.");
      break;
 }
}
</script>