buf.readBigUInt64BE([offset])

• offset <integer> 开始读取之前要跳过的字节数。必须满足：0 <= offset <= buf.length - 8。默认值：0。

  ¥offset <integer> Number of bytes to skip before starting to read. Must satisfy: 0 <= offset <= buf.length - 8. Default: 0.

• 返回：<bigint>

  ¥Returns: <bigint>

从指定的 offset 处的 buf 读取无符号的大端序 64 位整数。

¥Reads an unsigned, big-endian 64-bit integer from buf at the specified offset.

此函数也可在 readBigUint64BE 别名下使用。

¥This function is also available under the readBigUint64BE alias.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);

console.log(buf.readBigUInt64BE(0));
// Prints: 4294967295nconst { Buffer } = require('node:buffer');

const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);

console.log(buf.readBigUInt64BE(0));
// Prints: 4294967295n拷贝