JavaScript arrayBuffer slice() Method

The arrayBuffer.slice is a property in JavaScript that return another arrayBuffer containing the contents of the previous arrayBuffer from beginning inclusive, to end, exclusive in bytes. ArrayBuffer is an object which is used to represent fixed-length binary data.

Difference between property and function in javascript.

Property in JavaScript is nothing but a value whereas method is a function.

Syntax:

arraybuffer.slice(begin[, end])

Parameters:

• begin: The slicing begins from the Zero-based byte index.
• end: The slicing ends at this index byte. The new ArrayBuffer will contain all the contents if the end is found unspecified. It must be a valid index range specified for the current array. If the new ArrayBuffer length is found negative then it is fixed with zero.

Return Value: The property returns a new ArrayBuffer object. 

Examples: 

Input : uint32View[1] = 31
        myBuffer.slice(4, 12)
        sliced_bu[0]
Output : 31

Input : uint32View[1] = 32
        myBuffer.slice(4, 12)
        sliced_bu[0]
Output : 32

Example: In this example, we will learn about the arrayBuffer.slice() property of Javascript.

javascript

// create an ArrayBuffer with a size 25 in bytes
let myBuffer = new ArrayBuffer(16);

// produces Uint32Array [0, 0, 0, 0]
let uint32View = new Uint32Array(myBuffer);

uint32View[1] = 30;

// produces Uint32Array [30, 0]
let sliced_buf = new Uint32Array(myBuffer.slice(4, 12));

// expected output: 30
console.log(sliced_buf[0]);

Output:

30

We have a complete list of Javascript Array methods, to check those please go through this JavaScript ArrayBuffer Complete Reference article.

Supported Browser:

• Google Chrome
• Internet Explorer
• Firefox
• Opera
• Safari

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.