js 编码如何转换

// 将字符串转换为UTF-8编码
let utf8Encoded = encodeURIComponent('你好');
console.log(utf8Encoded); // %E4%BD%A0%E5%A5%BD

// 将UTF-8编码转换回字符串
let decoded = decodeURIComponent(utf8Encoded);
console.log(decoded); // 你好

// 将字符串转换为UTF-8编码的字节数组
let encoder = new TextEncoder();
let utf8Bytes = encoder.encode('你好');
console.log(utf8Bytes); // Uint8Array(6) [228, 189, 160, 229, 165, 189]

// 将UTF-8编码的字节数组转换回字符串
let decoder = new TextDecoder();
let decodedString = decoder.decode(utf8Bytes);
console.log(decodedString); // 你好

const iconv = require('iconv-lite');

// 将GBK编码的字符串转换为UTF-8编码
let gbkEncoded = iconv.encode('你好', 'GBK');
let utf8Decoded = iconv.decode(gbkEncoded, 'UTF-8');
console.log(utf8Decoded); // 你好

// 将UTF-8编码的字符串转换为GBK编码
let utf8Encoded = '你好';
let gbkEncoded = iconv.encode(utf8Encoded, 'GBK');
console.log(gbkEncoded); // <Buffer e4 bd a0 e5 a5 bd>

const iconv = require('iconv-lite');

// 将GBK编码的字符串转换为UTF-8编码
let gbkString = '你好';
let utf8String = iconv.decode(iconv.encode(gbkString, 'GBK'), 'UTF-8');
console.log(utf8String); // 你好

// 将UTF-8编码的字符串转换为GBK编码
let utf8String2 = '你好';
let gbkBuffer = iconv.encode(utf8String2, 'GBK');
console.log(gbkBuffer); // <Buffer e4 bd a0 e5 a5 bd>