The Buffer.byteOffset property is an inbuilt application programming interface of class Buffer within buffer module which is used to get the byte offset value of this buffer.
Syntax:
const Buffer.byteOffset
Return Value: This property return the object of array buffer.
Example 1: Filename: index.js
// Node.js program to demonstrate the
// Buffer.byteOffset property
// Creating and initializing arraybuffer object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object from existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Getting byteoffset of buffer
// by using byteoffset property
const bytoff = buffer.byteOffset;
// Display the result
console.log("byteoffset is : " + bytoff);
Output:
byteoffset is : 0
Example 2: Filename: index.js
// Node.js program to demonstrate the
// Buffer.byteOffset property
// Creating and initializing arraybuffer object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object from existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Getting byteoffset of buffer
// by using byteoffset property
const bytoff = buffer.byteOffset;
const buff = new Int8Array(buffer, bytoff, buffer.length);
// Display the result
console.log("Int8Arry object : " + buff);
Output:
Int8Arry object : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
Run the index.js file using the following command:
node index.js
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/buffer.html#buffer_buf_byteoffset