<video></video>双击直接默认全屏了。但是因为工作需要，需要双击切换下一个（轮播），只能在上边覆盖一层：

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<div style="width: 100%;height: 100%;position: relative">
    <video style="z-index: -1" controls autoplay loop muted controls="nofullscreen"
           id="videoID">
        <source src="asset/lkts/video/幻灯片5.mp4" type="video/mp4">
        <source src="movie.mp4" type="video/mp4">
    </video>
    <div style="position: absolute;height: calc(100% - 60px);width: 100%;top: 0"></div>
</div>