TypedArray.prototype.slice()

BaselineWidely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2016.

Theslice() method ofTypedArray instances returns a copy of a portion of a typed array into a new typed array object selected fromstart toend (end not included) wherestart andend represent the index of items in that typed array. The original typed array will not be modified. This method has the same algorithm asArray.prototype.slice().

Try it

const uint8 = new Uint8Array([10, 20, 30, 40, 50]);const array1 = uint8.slice(1, 3);console.log(array1);// Expected output: Uint8Array [20, 30]

Syntax

slice()slice(start)slice(start, end)

Parameters

startOptional: Zero-based index at which to start extraction,converted to an integer.
endOptional: Zero-based index at which to end extraction,converted to an integer.slice() extracts up to but not includingend.

Return value

A new typed array containing the extracted elements.

Description

SeeArray.prototype.slice() for more details. This method is not generic and can only be called on typed array instances.

Examples

Return a portion of an existing typed array

const uint8 = new Uint8Array([1, 2, 3]);uint8.slice(1); // Uint8Array [ 2, 3 ]uint8.slice(2); // Uint8Array [ 3 ]uint8.slice(-2); // Uint8Array [ 2, 3 ]uint8.slice(0, 1); // Uint8Array [ 1 ]