buf.readBigUInt64LE([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、小端字节序的 64 位整数。

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

这个函数也可以通过 readBigUint64LE 别名使用。

【This function is also available under the readBigUint64LE alias.】

import { Buffer } from 'node:buffer';

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

console.log(buf.readBigUInt64LE(0));
// Prints: 18446744069414584320nconst { Buffer } = require('node:buffer');

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

console.log(buf.readBigUInt64LE(0));
// Prints: 18446744069414584320n