Buffer.writeDoubleBE - buffer - Node documentation

Node

buffer

writeDoubleBE

method Buffer.writeDoubleBE

#Buffer.writeDoubleBE(value: number,
offset?: number,
): number

Writes value to buf at the specified offset as big-endian. The value must be a JavaScript number. Behavior is undefined when value is anything other than a JavaScript number.

import { Buffer } from 'node:buffer';

const buf = Buffer.allocUnsafe(8);

buf.writeDoubleBE(123.456, 0);

console.log(buf);
// Prints: <Buffer 40 5e dd 2f 1a 9f be 77>

Parameters #

#value: number

Number to be written to buf.

optional

#offset: number = 0

Number of bytes to skip before starting to write. Must satisfy 0 <= offset <= buf.length - 8.

Return Type #

number

offset plus the number of bytes written.