如何检测您的浏览器是否支持HTML5视频，，看下面代码：
function checkVideo(){if(!!document.createElement('video').canPlayType){var vidTest=document.createElement("video");oggTest=vidTest.canPlayType('video/ogg; codecs="theora, vorbis"');if (!oggTest){h264Test=vidTest.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"');if (!h264Test){document.getElementById("checkVideoResult").innerHTML="Sorry. No video support."}else{if (h264Test=="probably"){document.getElementById("checkVideoResult").innerHTML="Yes! Full support!";}else{document.getElementById("checkVideoResult").innerHTML="Well. Some support.";}}}else{if (oggTest=="probably"){document.getElementById("checkVideoResult").innerHTML="Yes! Full support!";}else{document.getElementById("checkVideoResult").innerHTML="Well. Some support.";}}}else{document.getElementById("checkVideoResult").innerHTML="Sorry. No video support."}} 代码就是这么简单！！看看运行效果：
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