buf.writeBigInt64BE(value[, offset])
value<bigint> 要写入buf的数字。offset<integer> 在开始写入之前要跳过的字节数。必须满足:0 <= offset <= buf.length - 8。默认值:0。- 返回:<integer>
offset加上写入的字节数。
将 value 写入 buf 的指定 offset,采用大端格式。
【Writes value to buf at the specified offset as big-endian.】
value 被解释并写作二进制补码有符号整数。
import { Buffer } from 'node:buffer';
const buf = Buffer.allocUnsafe(8);
buf.writeBigInt64BE(0x0102030405060708n, 0);
console.log(buf);
// Prints: <Buffer 01 02 03 04 05 06 07 08>const { Buffer } = require('node:buffer');
const buf = Buffer.allocUnsafe(8);
buf.writeBigInt64BE(0x0102030405060708n, 0);
console.log(buf);
// Prints: <Buffer 01 02 03 04 05 06 07 08>