Node.js Buffer Slice

• Javascript

• Node.js Core

• • Core

  • Buffer

  • child_process

  • crypto

  • dns

  • events

  • fs

  • http

  • https

  • net

  • process

  • sys

  • util

  • zlib

Introduction

Following is the syntax of the method to get a sub-buffer of a node buffer:

buf.slice([start][, end]);

Returns a new buffer which references the same memory as the old, but offset and cropped by the start (defaults to 0) and end (defaults to buffer.length) indexes.

Negative indexes start from the end of the buffer.

// example/*  w  w  w.j ava2 s.  co m*/
var buffer1 = Buffer.from('testaaaaaaaaa');
// slicing a buffer
var buffer2 = buffer1.slice(0,9);
console.log("buffer2 content: " + buffer2.toString());

Related

• Node.js Buffer Create
• Node.js Buffer Length
• Node.js Buffer Read
• Node.js Buffer Write
• Node.js child_process run os command