W3School TIY Editor
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<!DOCTYPE html> <html> <body> <button onclick="getMuted()" type="button">该视频默认是静音的吗？</button> <button onclick="setToMuted()" type="button">把视频设置为默认静音，并重载视频</button> <br /> <br /> <video id="video1" controls="controls"> <source src="/example/html5/mov_bbb.mp4" type="video/mp4"> <source src="/example/html5/mov_bbb.ogg" type="video/ogg"> Your browser does not support HTML5 video. </video> <script> myVid=document.getElementById("video1"); function getMuted() { alert(myVid.defaultMuted); } function setToMuted() { myVid.defaultMuted=true; myVid.load() } </script> </body> </html>