Memo
20240113 bjnlsba5
JSON 与 Base64 互转 `typescript // Encode { const obj = {"Hello": "World"} const bytes = new TextEncoder().encode(JSON.stringify(obj)); const binStr = String.fromCharCode(...bytes); const base64Str...
JSON 与 Base64 互转
// Encode
{
const obj = {"Hello": "World"}
const bytes = new TextEncoder().encode(JSON.stringify(obj));
const binStr = String.fromCharCode(...bytes);
const base64Str = btoa(binStr);
console.log('base64', base64Str);
}
// Decode
{
const base64Str = 'eyJIZWxsbyI6IldvcmxkIn0=';
const binStr = atob(base64Str);
const bytes = Uint8Array.from(binStr, (m) => m.codePointAt(0)!);
const jsonStr = new TextDecoder().decode(bytes);
const obj = JSON.parse(jsonStr);
console.log('obj', obj);
}
btoa 函数需要传入一个二进制字符串，而 Unicode 字符串可能会出现一个字符占用多个字节，会因为字符“太宽”导致函数执行失败。