buf.readUInt8([offset])

• offset <integer> 开始读取之前要跳过的字节数。 必须满足 0 <= offset <= buf.length - 1。 默认值: 0。
• 返回: <integer>

从指定 offset 处的 buf 读取无符号 8 位整数。

此函数也可在 readUint8 别名下使用。

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, -2]);

console.log(buf.readUInt8(0));
// 打印: 1
console.log(buf.readUInt8(1));
// 打印: 254
console.log(buf.readUInt8(2));
// 抛出 ERR_OUT_OF_RANGE。const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, -2]);

console.log(buf.readUInt8(0));
// 打印: 1
console.log(buf.readUInt8(1));
// 打印: 254
console.log(buf.readUInt8(2));
// 抛出 ERR_OUT_OF_RANGE。

• offset <integer> Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 1. Default: 0.
• Returns: <integer>

Reads an unsigned 8-bit integer from buf at the specified offset.

This function is also available under the readUint8 alias.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, -2]);

console.log(buf.readUInt8(0));
// Prints: 1
console.log(buf.readUInt8(1));
// Prints: 254
console.log(buf.readUInt8(2));
// Throws ERR_OUT_OF_RANGE.const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, -2]);

console.log(buf.readUInt8(0));
// Prints: 1
console.log(buf.readUInt8(1));
// Prints: 254
console.log(buf.readUInt8(2));
// Throws ERR_OUT_OF_RANGE.