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in Technique[技术] by (71.8m points)

求助二次运算的js怎么还原正常的if

下面的代码怎么还原,还原过来是什么?
s = (s = sessionStorage.getItem("nowtabs")) || 0


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by (71.8m points)

我寻思这也不叫还原。
if 改写的话大概是这样

s = sessionStorage.getItem("nowtabs")
if (! s) s = 0

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