标签：bool def boolean 学习 script als undefined number efi
isNaN(null);
==false
isNaN(undefined);
==true
isNaN(true);
==false
Number(true);
==1
Number(false);
==0
Boolean(null);
==false
Infinity+null
==Infinity
Infinity+undefined
==NaN
标签：bool def boolean 学习 script als undefined number efi
原文地址：https://www.cnblogs.com/0xthonsun/p/10224304.html
