HTML5使用DOM进行自定义控制

<p id="video_p" style="text-align:center;"> <button onclick="playPause()">播放/暂停</button> <button onclick="toBig()">大</button> <button onclick="toNormal()">中</button> <button onclick="toSmall()">小</button> <video id="myVideo" width="500" height="250" style="margin-top:15px;"> <source src="demo.mp4" type="video/mp4" /> <source src="demo.ogg" type="video/ogg" /> 您的浏览器不支持此HTML5 视频标签。 </video> </p>

<script type="text/javascript"> var myVideo=document.getElementById("myVideo"); function playPause() { if (myVideo.paused) myVideo.play(); else myVideo.pause(); } function toBig() { myVideo.width=560; } function toNormal() { myVideo.width=420; } function toSmall() { myVideo.width=320; } </script>