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有没有一种方法， js 阻止用户截图？
source link: https://www.v2ex.com/t/490461
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程序员 - @alwayshere - 网站上的图片不想让用户下载，又不想打水印影响图片美观，js 已经阻止了右键保存和拖拽，但是用户一截图又相当于保存图片了，有没有什么方法可以阻止用户截图？
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