buf.readBigUInt64BE([offset])


  • offset <integer> 读取前要跳过的字节数。必须满足:0 <= offset <= buf.length - 8默认值: 0
  • 返回:<bigint>

buf 在指定的 offset 处读取一个无符号的大端 64 位整数。

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

这个函数也可以通过 readBigUint64BE 别名使用。

【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