Array.prototype.findLast()

findLast(callbackFn, thisArg)

Returns: undefined | element · Added in vES2023 · Updated March 13, 2026 · Array Methods

array find search es2023

findLast() returns the last element in an array that satisfies a testing function, or undefined if no element matches. It iterates from the end of the array toward the beginning.

Syntax

findLast(callbackFn)
findLast(callbackFn, thisArg)

Parameters

Parameter	Type	Default	Description
`callbackFn`	`function`	—	A function to execute for each element. Return `true` to signal a match.
`thisArg`	`any`	`undefined`	Optional. Value to use as `this` when executing `callbackFn`.

callbackFn Parameters

Parameter	Type	Description
`element`	`any`	The current element being processed.
`index`	`number`	The index of the current element.
`array`	`array`	The array that `findLast` was called on.

Examples

Basic usage

const nums = [5, 12, 8, 130, 44];

const lastEven = nums.findLast(n => n % 2 === 0);
console.log(lastEven);
// 44

Finding the last matching object

const users = [
  { id: 1, name: "Alice", active: true },
  { id: 2, name: "Bob", active: false },
  { id: 3, name: "Charlie", active: true },
  { id: 4, name: "Diana", active: true }
];

const lastActive = users.findLast(u => u.active);
console.log(lastActive);
// { id: 4, name: "Diana", active: true }

When no match is found

const nums = [1, 3, 5, 7];

const result = nums.findLast(n => n > 10);
console.log(result);
// undefined

Common Patterns

Getting the last item satisfying a condition

Use findLast when you need the most recent entry in a time-ordered array:

const events = [
  { type: "click", timestamp: 1700000000 },
  { type: "hover", timestamp: 1700000100 },
  { type: "click", timestamp: 1700000200 },
  { type: "scroll", timestamp: 1700000300 }
];

const lastClick = events.findLast(e => e.type === "click");
console.log(lastClick);
// { type: "click", timestamp: 1700000200 }