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。

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.

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.