buf.readFloatLE([offset])

版本历史

版本	变更
v10.0.0	删除了 `noAssert` 并且不再隐式强制将偏移量强制转换为 `uint32`。
v0.11.15	新增于: v0.11.15

offset <integer> 开始读取之前要跳过的字节数。必须满足 0 <= offset <= buf.length - 4。 默认值: 0。
返回: <number>

从指定 offset 处的 buf 读取 32 位小端序浮点数。

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3, 4]);

console.log(buf.readFloatLE(0));
// 打印: 1.539989614439558e-36
console.log(buf.readFloatLE(1));
// 抛出 ERR_OUT_OF_RANGE。const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3, 4]);

console.log(buf.readFloatLE(0));
// 打印: 1.539989614439558e-36
console.log(buf.readFloatLE(1));
// 抛出 ERR_OUT_OF_RANGE。

History

Version	Changes
v10.0.0	Removed `noAssert` and no implicit coercion of the offset to `uint32` anymore.
v0.11.15	Added in: v0.11.15

offset <integer> Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 4. Default: 0.
Returns: <number>

Reads a 32-bit, little-endian float from buf at the specified offset.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3, 4]);

console.log(buf.readFloatLE(0));
// Prints: 1.539989614439558e-36
console.log(buf.readFloatLE(1));
// Throws ERR_OUT_OF_RANGE.const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3, 4]);

console.log(buf.readFloatLE(0));
// Prints: 1.539989614439558e-36
console.log(buf.readFloatLE(1));
// Throws ERR_OUT_OF_RANGE.