Array at()Baseline · Widely available

The at() method of arrays and typed arrays returns the item at an index, including negative indices for getting items relative to the end of an array. Also known as the relative indexing method.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Mar 14, 2022. Widely available since Sep 14, 2024.

How to use ↓Compare browsers

Browser support

DesktopChrome

1–91Not supported

92+Supportedsince Jul 20, 2021

Current: 155

Edge

12–91Not supported

92+Supportedsince Jul 22, 2021

Current: 154

Firefox

1–89Not supported

90+Supportedsince Jul 13, 2021

Current: 157

Safari

1–15.3Not supported

15.4+Supportedsince Mar 14, 2022

Current: 27

MobileChrome Android

18–91Not supported

92+Supportedsince Jul 20, 2021

Current: 155

Firefox Android

4–89Not supported

90+Supportedsince Jul 13, 2021

Current: 157

Safari iOS

1–15.3Not supported

15.4+Supportedsince Mar 14, 2022

Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

const items = ["a", "b", "c"];
items.at(0);  // "a"
items.at(-1); // "c" — last item, no items[items.length - 1]

Feature detection

JS · check before using

if ("at" in Array || ("prototype" in Array && "at" in Array.prototype)) {
  // Array.at is available
}

Documentation (MDN)

Specification

tc39.es#sec-array.prototype.at ↗

Sub-features

Support for each part of the feature (2). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
Array.at	92	92	90	15.4	92	90	15.4
TypedArray.at	92	92	90	15.4	92	90	15.4