Node.js代码将十六进制字符串转换为字节数组？

Question

Can anyone please tell me equivalent Nodejs code to convert hex string to byte array which is in Java

public static byte[] hexStringToByteArray(String s) {
    byte[] b = new byte[s.length() / 2];
    for (int i = 0; i < b.length; i++) {
        int index = i * 2;
        int v = Integer.parseInt(s.substring(index, index + 2), 16);
        b[i] = (byte) v;

    }
    return b;
}

Answer 1

您可以使用Buffer.from(str, [encoding])进行转换。

Buffer.from(str, 'hex');