http://www.w3school.com.cn/html5/html_5_video.asp http://www.w3school.com.cn/html5/html_5_video_dom.asp http://www.w3school.com.cn/html5/html_5_audio.asp
![第一个APP——GeoQuiz[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)