1---
2category: Array
3---
4 
5# useArrayFindLast
6 
7Reactive `Array.findLast`.
8 
9## Usage
10 
11```ts
12import { useArrayFindLast } from '@vueuse/core'
13 
14const list = [ref(1), ref(-1), ref(2)]
15const positive = useArrayFindLast(list, val => val > 0)
16// positive.value: 2
17```
18 
19### Use with reactive array
20 
21```ts
22import { useArrayFindLast } from '@vueuse/core'
23 
24const list = reactive([-1, -2])
25const positive = useArrayFindLast(list, val => val > 0)
26// positive.value: undefined
27list.push(10)
28// positive.value: 10
29list.push(5)
30// positive.value: 5
31```
32 
33## Type Declarations
34 
35```ts
36export type UseArrayFindLastReturn<T = any> = ComputedRef<T | undefined>
37/**
38 * Reactive `Array.findLast`
39 *
40 * @see https://vueuse.org/useArrayFindLast
41 * @param list - the array was called upon.
42 * @param fn - a function to test each element.
43 *
44 * @returns the last element in the array that satisfies the provided testing function. Otherwise, undefined is returned.
45 *
46 * @__NO_SIDE_EFFECTS__
47 */
48export declare function useArrayFindLast<T>(
49  list: MaybeRefOrGetter<MaybeRefOrGetter<T>[]>,
50  fn: (element: T, index: number, array: MaybeRefOrGetter<T>[]) => boolean,
51): UseArrayFindLastReturn<T>
52```
53