JS 中 json數據 與 base64、ArrayBuffer之間轉換

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json 字符串進行 base64 編碼

function jsonToBase64(json) {return Buffer.from(json).toString('base64');
}

base64 字符串轉為 json 字符串

function base64ToJson(base64) {try {const binaryString = atob(base64);const jsonString = new TextDecoder().decode(new Uint8Array(binaryString.split('').map(c => c.charCodeAt(0))));return jsonString;} catch (error) {console.error('Failed to decode Base64 string:', error);throw error;}
}

ArrayBuffer 轉換為 base64

function arrayBufferToBase64(arrayBuffer) {return arrayBuffer.toString('base64');
}

base64 字符串轉換為 ArrayBuffer

function base64ToArrayBuffer(base64) {const binaryString = atob(base64);const bytes = new Uint8Array(binaryString.length);for (let i = 0; i < binaryString.length; i++) {bytes[i] = binaryString.charCodeAt(i);}return bytes.buffer;
}