useArrayFind

反应式 Array.find。

¥Reactive Array.find.

用法

¥Usage

import { useArrayFind } from '@vueuse/core'

const list = [ref(1), ref(-1), ref(2)]
const positive = useArrayFind(list, val => val > 0)
// positive.value: 1

与反应式数组一起使用

¥Use with reactive array

import { useArrayFind } from '@vueuse/core'

const list = reactive([-1, -2])
const positive = useArrayFind(list, val => val > 0)
// positive.value: undefined
list.push(1)
// positive.value: 1

类型声明

typescript

/**
 * Reactive `Array.find`
 *
 * @see https://vueuse.org/useArrayFind
 * @param list - the array was called upon.
 * @param fn - a function to test each element.
 *
 * @returns the first element in the array that satisfies the provided testing function. Otherwise, undefined is returned.
 */
export declare function useArrayFind<T>(
  list: MaybeRefOrGetter<MaybeRefOrGetter<T>[]>,
  fn: (element: T, index: number, array: MaybeRefOrGetter<T>[]) => boolean,
): ComputedRef<T | undefined>