fmpq.com
源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> <video id="myVideo" controls src="movie.ogg"> 您的浏览器不支持 video 标签。 </video> <p>点击按钮修改视频的 URL。</p> <p id="demo"></p> <button onclick="myFunction()">点我</button> <script> var x = document.getElementById("myVideo"); function myFunction(){ isSupp = x.canPlayType("video/mp4"); if (isSupp == ""){ x.src = "mov_bbb.ogg"; }else{ x.src = "mov_bbb.mp4"; } x.load(); document.getElementById("demo").innerHTML = "Video Courtesy of Big Buck Bunny - www.bigbuckbunny.org"; } </script> </body> </html>
运行结果