var timeHandler = null;
 
// if they stop listening,don't give them the alert
   myAudioElement.addEventListener('stop',function() {
     if (timeHandler) clearTimeout(timeHandle);
   });
 
// when they start to play,set an event to pop up 5 seconds later
    myAudioElement.addEventListener('play',function() {
        timeHandler = setTimeout(5000,function() {
          // here I would make some kind of ajax call to log the event
          alert("it's been 5 seconds!");
        });

一如以往,根据您的需要,这可能会变得更加复杂.您也可以使用ontimeupdate事件来跟踪播放头目前所在的位置.有关html5音频事件的参考,请查看此页面：

https://developer.mozilla.org/en/DOM/Media_events

祝你好运！