三種指令 播放暫停/拖移/快慢

<button onclick="playVid()" type="button">播放</button>
<button onclick="pauseVid()" type="button">暂停</button>
<br />
<br />


拖移
<div id="div2" ondrop="drop(event)" ondragover="allowDrop(event)"></div>

影片快速慢速