~~true == 1
~~false == 0~~"" == 0~~[] == 0~~undefined ==0~~!undefined == 1~~null == 0~~!null == 1本文共 158 字，大约阅读时间需要 1 分钟。
~~true == 1
~~false == 0~~"" == 0~~[] == 0~~undefined ==0~~!undefined == 1~~null == 0~~!null == 1转载于:https://www.cnblogs.com/chengqiaoli/p/5385913.html