Question

使用包hashids，我可以从数字

获取哈希（并编码y解码）

var Hashids = require("hashids"),
    hashids = new Hashids("this is my salt", 8);

var id = hashids.encode(1);

存在一些类似的包来从字符串获取哈希？（带编码/解码）

Answer 1

var Hashids = require("hashids");
var hashids = new Hashids("this is my salt");

var hex = Buffer('Hello World').toString('hex');
console.log (hex); // '48656c6c6f20576f726c64'

var encoded = hashids.encodeHex(hex);
console.log (encoded); // 'rZ4pPgYxegCarB3eXbg'

var decodedHex = hashids.decodeHex('rZ4pPgYxegCarB3eXbg');
console.log (decodedHex); // '48656c6c6f20576f726c64'

var string = Buffer('48656c6c6f20576f726c64', 'hex').toString('utf8');
console.log (string); // 'Hello World'

Answer 2

在没有 Node 的 Buffer.from 的情况下获取十六进制（与 hashids.decodeHex 一起使用）

const toHex = (str: string): string => str.split("")
        .reduce((hex, c) => hex += c.charCodeAt(0).toString(16).padStart(2, "0"), "")
const toUTF8 = (num: string): string =>
        num.match(/.{1,2}/g)
            .reduce((acc, char) => acc + String.fromCharCode(parseInt(char, 16)),"");

从字符串中获取哈希值，例如哈希值

2 个答案: