buf.readInt8(offset)


  • offset <integer> 开始读取的偏移量。必须满足0 <= offset <= buf.length - 1
  • 返回: <integer>

buf 中指定的 offset 读取一个有符号的 8 位整数值。

Buffer 中读取的整数值会被解析为二进制补码值。

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

console.log(buf.readInt8(0));
// 打印: -1
console.log(buf.readInt8(1));
// 打印: 5
console.log(buf.readInt8(2));
// 抛出异常 ERR_OUT_OF_RANGE。
  • offset <integer> Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 1.
  • Returns: <integer>

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

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

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