<!DOCTYPE html>播放视频。id="myVideo" width="320" height="176" controlssrc="/statics/demosource/mov_bbb.mp4" type="video/mp4"src="/statics/demosource/mov_bbb.ogg" type="video/ogg"您的浏览器不支持 HTML5 video 标签。var vid = document.getElementById("myVideo");vid.addEventListener("waiting", function() {alert("稍等! 我需要缓冲下一帧");});