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• 1.字符和数字相互转换

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1.字符和数字相互转换

String.fromCharCode()
静态 String.fromCharCode() 方法返回由指定的 UTF-16 代码单元序列创建的字符串。

console.log(String.fromCharCode(65, 43, 97, 61));
//"A+a="

String.prototype.charCodeAt()
charCodeAt() 方法返回 0 到 65535 之间的整数，表示给定索引处的 UTF-16 代码单元

const sentence = 'The quick brown fox jumps over the lazy dog.';
const index = 4;
console.log(`The character code ${sentence.charCodeAt(index)} is equal to ${sentence.charAt(2)}`);
// expected output: "The character code 113 is equal to e"

标签：常用,code,String,sentence,character,js,API,charCodeAt,fromCharCode
来源： https://blog.csdn.net/weixin_43593989/article/details/120593778