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源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>安科教程(www.ancii.com)</title> </head> <body> <video id="myVideo" width="320" height="240" controls> <source src="/statics/demosource/movie.mp4" type="video/mp4"> <source src="/statics/demosource/movie.ogg" type="video/ogg"> 您的浏览器不支持 video 标签。 </video><br> <button onclick="getMuted()" type="button">视频是否默认静音?</button> <button onclick="setToMuted()" type="button">设置视频默认静音，并重新载入视频</button> <script> var x = document.getElementById("myVideo"); function getMuted(){ alert(x.defaultMuted); } function setToMuted(){ x.defaultMuted = true; x.load() } </script> </body> </html>
运行结果
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