JavaScript (ES2026) reference · Array Methods

JavaScript Array at() Method

Return the element at an index, where negative indexes count from the end: arr.at(-1) is the last element.

JavaScript (ES2026) Since ES2022

Syntax

array.at(index)

Parameter	Description
`index`	Position; negative values count back from the end.

The element, or undefined if the index is out of range.

Positive and negative indexesTry it yourself

const colors = ["red", "green", "blue"];
console.log(colors.at(0), colors.at(-1), colors.at(5));

Output

red blue undefined

The last elementTry it yourself

const scores = [70, 85, 92];
console.log(scores[scores.length - 1]); // the old way
console.log(scores.at(-1));             // the same, shorter

Output

92
92

Version	Change
JavaScript ES2022	Added

array.indexOf() · Return the first index at which a value is found (using ===), or -1 if it isn't in the array.
array.slice() · Return a shallow copy of part of the array, from start up to (not including) end. The original is not changed.
array.with() · Return a copy of the array with one element replaced, leaving the original unchanged. Negative indexes count from the end.
JavaScript Arrays · tutorial
JavaScript Array Methods · tutorial