插入音频
<audio id="audio" controls="" preload="none">
<source id="mp3"src="https://sz-sycdn.kuwo.cn/4591311c3897b5be364a4a61fa5c0ee0/5e23f572/resource/n2/83/56/3583003746.mp3">
</audio>插入视频
video
<video id="video" controls="" preload="none" poster="http://img.blog.fandong.me/2017-08-26-Markdown-Advance-Video.jpg">
<source id="mp4" src="http://img.blog.fandong.me/2017-08-26-Markdown-Advance-Video.mp4" type="video/mp4">
</video>
