W3School TIY Editor
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<!DOCTYPE html> <html> <body> <button onclick="changeSource()" type="button">更改视频</button> <br /> <br /> <video id="video1" controls="controls" autoplay="autoplay"> <source id="mp4_src" src="/example/html5/mov_bbb.mp4" type="video/mp4"> <source id="ogg_src" src="/example/html5/mov_bbb.ogg" type="video/ogg"> Your browser does not support HTML5 video. </video> <script> function changeSource() { document.getElementById("mp4_src").src="movie.mp4"; document.getElementById("ogg_src").src="movie.ogg"; document.getElementById("video1").load(); } </script> </body> </html>