W3Schools 在线编辑工具（TIY） V3.0
编辑的代码:
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<!DOCTYPE html> <html> <body> <button onclick="enableControls()" type="button">启动控件</button> <button onclick="disableControls()" type="button">禁用控件</button> <button onclick="checkControls()" type="button">检查控件的状态</button> <br> <video id="video1"> <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 enableControls() { myVid.controls=true; myVid.load(); } function disableControls() { myVid.controls=false; myVid.load(); } function checkControls() { alert(myVid.controls); } </script> </body> </html>