题解 | #简单密码#
https://www.nowcoder.com/practice/7960b5038a2142a18e27e4c733855dac
let arr = ["a", "z", "A", "Z"] arr.forEach((item) => console.log(item.charAtCode()))
先自测运行查看Unicode码
str.charCodeAt 字符串转Unicode
静态方法String.fromCharCode(num) Unicode转字符串