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关于代码压缩后 !1=n 这种语法

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关于代码压缩后 !1=n 这种语法

image.png

image.png

先上图
第一张图绿框中的代码是第二张图if里面的判断条件

'IntersectionObserver' in window ---> !1 in t
`'IntersectionObserverEntry' in window ---> !1 in t`

啥玩意... 我看没看懂

最终真的能解决我要判断的条件吗，求大佬指导


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与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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