如何避免在同一页面上重复加载HTML视频？
使用preload=“auto”来避免在同一页面上重复加载HTML视频-
<!DOCTYPE html>
<html>
<body>
<video width = "350" height = "200" controls = "controls" preload = "auto">
<source src = "movie.mp4" type = "video/mp4" />
<source src = "movie.ogg" type = "video/ogg" />
Your browser does not support the video tag.
</video>
</body>
</html>