buf.readInt8([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

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

  • 返回:<integer>

    ¥Returns: <integer>

从指定的 offset 处的 buf 读取有符号的 8 位整数。

¥Reads a signed 8-bit integer from buf at the specified offset.

Buffer 读取的整数被解释为二进制补码有符号值。

¥Integers read from a Buffer are interpreted as two's complement signed values.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([-1, 5]);

console.log(buf.readInt8(0));
// Prints: -1
console.log(buf.readInt8(1));
// Prints: 5
console.log(buf.readInt8(2));
// Throws ERR_OUT_OF_RANGE.const { Buffer } = require('node:buffer');

const buf = Buffer.from([-1, 5]);

console.log(buf.readInt8(0));
// Prints: -1
console.log(buf.readInt8(1));
// Prints: 5
console.log(buf.readInt8(2));
// Throws ERR_OUT_OF_RANGE.