Buffer.readUInt32BE - buffer - Node documentation

Node

buffer

readUInt32BE

method Buffer.readUInt32BE

#Buffer.readUInt32BE(offset?: number): number

Reads an unsigned, big-endian 32-bit integer from buf at the specifiedoffset.

This function is also available under the readUint32BE alias.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);

console.log(buf.readUInt32BE(0).toString(16));
// Prints: 12345678

Parameters #

optional

#offset: number = 0

Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 4.

Return Type #

number