TypedArray.prototype.slice()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The slice() method of TypedArray instances returns a copy of a portion of a typed array into a new typed array object selected from start to end (end not included) where start and end represent the index of items in that typed array. The original typed array will not be modified. This method has the same algorithm as Array.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

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

Parameters

start Optional

Zero-based index at which to start extraction, converted to an integer.

end Optional

Zero-based index at which to end extraction, converted to an integer. slice() extracts up to but not including end.

Return value

A new typed array containing the extracted elements.

Description

See Array.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

js
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 ]

Specifications

Specification
ECMAScript® 2025 Language Specification
# sec-%typedarray%.prototype.slice

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
slice

Legend

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Full support
Full support

See also