十进制ASCII码转换成字符
- 使用
String.fromCodePoint(num1[, ...[, numN]])
方法
String.fromCharCode(65) // A
String.fromCharCode(90) // Z
String.fromCharCode(97) // a
String.fromCharCode(122) // z
- 也可以使用
String.fromCharCode(num1[, ...[, numN]])
方法
String.fromCodePoint(65) // A
String.fromCodePoint(90) // Z
String.fromCodePoint(97) // a
String.fromCodePoint(122) // z
fromCodePoint()
, fromCharCode()
两个都是String
的静态方法,所以直接使用,不需要实例化。
两者的主要区别是:
fromCharCode()
出现的早,可以处理常用的字符编码
fromCodePoint()
ES2015出现的,可以处理高位编码。
字符转换成十进制ASCII码
'A'.charCodeAt() // 65
'a'.charCodeAt() // 97
'Z'.charCodeAt() // 90
'z'.charCodeAt() // 122
参考:
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt