VueUseuseArrayMap
Reactive Array.map
Usage
Use with array of multiple refs
js
import { useArrayMap } from '@vueuse/core'
const item1 = ref(0)
const item2 = ref(2)
const item3 = ref(4)
const item4 = ref(6)
const item5 = ref(8)
const list = [item1, item2, item3, item4, item5]
const result = useArrayMap(list, i => i * 2)
// result.value: [0, 4, 8, 12, 16]
item1.value = 1
// result.value: [2, 4, 8, 12, 16]
import { useArrayMap } from '@vueuse/core'
const item1 = ref(0)
const item2 = ref(2)
const item3 = ref(4)
const item4 = ref(6)
const item5 = ref(8)
const list = [item1, item2, item3, item4, item5]
const result = useArrayMap(list, i => i * 2)
// result.value: [0, 4, 8, 12, 16]
item1.value = 1
// result.value: [2, 4, 8, 12, 16]
Use with reactive array
js
import { useArrayMap } from '@vueuse/core'
const list = ref([0, 1, 2, 3, 4])
const result = useArrayMap(list, i => i * 2)
// result.value: [0, 2, 4, 6, 8]
list.value.pop()
// result.value: [0, 2, 4, 6]
import { useArrayMap } from '@vueuse/core'
const list = ref([0, 1, 2, 3, 4])
const result = useArrayMap(list, i => i * 2)
// result.value: [0, 2, 4, 6, 8]
list.value.pop()
// result.value: [0, 2, 4, 6]
Type Declarations
typescript
/**
* Reactive `Array.map`
*
* @see https://vueuse.org/useArrayMap
* @param {Array} list - the array was called upon.
* @param fn - a function that is called for every element of the given `list`. Each time `fn` executes, the returned value is added to the new array.
*
* @returns {Array} a new array with each element being the result of the callback function.
*/
export declare function useArrayMap<T, U = T>(
list: MaybeComputedRef<MaybeComputedRef<T>[]>,
fn: (element: T, index: number, array: T[]) => U
): ComputedRef<U[]>
/**
* Reactive `Array.map`
*
* @see https://vueuse.org/useArrayMap
* @param {Array} list - the array was called upon.
* @param fn - a function that is called for every element of the given `list`. Each time `fn` executes, the returned value is added to the new array.
*
* @returns {Array} a new array with each element being the result of the callback function.
*/
export declare function useArrayMap<T, U = T>(
list: MaybeComputedRef<MaybeComputedRef<T>[]>,
fn: (element: T, index: number, array: T[]) => U
): ComputedRef<U[]>
Source
Contributors
Anthony Fu
Young
plylrnsdy
Levi (Nguyễn Lương Huy)
Levi (Nguyễn Lương Huy)