静态方法：Buffer.from(array)

¥Static method: Buffer.from(array)

• array <integer[]>

使用 0 – 255 范围内的 array 字节分配新的 Buffer。该范围之外的数组条目将被截断以符合它。

¥Allocates a new Buffer using an array of bytes in the range 0 – 255. Array entries outside that range will be truncated to fit into it.

import { Buffer } from 'node:buffer';

// Creates a new Buffer containing the UTF-8 bytes of the string 'buffer'.
const buf = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);const { Buffer } = require('node:buffer');

// Creates a new Buffer containing the UTF-8 bytes of the string 'buffer'.
const buf = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);拷贝

如果 array 不是 Array 或其他适用于 Buffer.from() 变体的类型，则将抛出 TypeError。

¥A TypeError will be thrown if array is not an Array or another type appropriate for Buffer.from() variants.

Buffer.from(array) 和 Buffer.from(string) 也像 Buffer.allocUnsafe() 一样使用内部 Buffer 池。

¥Buffer.from(array) and Buffer.from(string) may also use the internal Buffer pool like Buffer.allocUnsafe() does.