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求助二次运算的js怎么还原正常的if

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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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1 Answer

answered Jan 25, 2021 by 深蓝 (71.8m points)

我寻思这也不叫还原。
用 if 改写的话大概是这样

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

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