摘要:https://blog.csdn.net/mouday/article/details/126952048
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摘要://交换两个变量 || 解构 let a = 0 let b = 1 [a,b] = [b,a] console.log(a,b) //1,0 //检查元素当前是否处于焦点(document.activeElement) const elementIsInFocus = el => (el docu
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摘要:https://www.cnblogs.com/yangtaotao0824/p/15953105.html
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