静态方法：Buffer.copyBytesFrom(view[, offset[, length]])

¥Static method: Buffer.copyBytesFrom(view[, offset[, length]])

• view <TypedArray> 要复制的 <TypedArray>。

  ¥view <TypedArray> The <TypedArray> to copy.

• offset <integer> view 中的起始偏移量。默认值：0。

  ¥offset <integer> The starting offset within view. Default: 0.

• length <integer> view 中要复制的元素数。默认值：view.length - offset。

  ¥length <integer> The number of elements from view to copy. Default: view.length - offset.

• 返回：<Buffer>

  ¥Returns: <Buffer>

将 view 的底层内存复制到新的 Buffer 中。

¥Copies the underlying memory of view into a new Buffer.

const u16 = new Uint16Array([0, 0xffff]);
const buf = Buffer.copyBytesFrom(u16, 1, 1);
u16[1] = 0;
console.log(buf.length); // 2
console.log(buf[0]); // 255
console.log(buf[1]); // 255 拷贝