Custom useAtom hooks

This page shows the ways of creating different utility functions. Utility functions save your time on coding, and you can preserve your base atom for other usage.

utils

useSelectAtom

import { useAtom } from 'jotai'
import { selectAtom } from 'jotai/utils'

export function useSelectAtom(anAtom, keyFn) {
    return useAtom(selectAtom(anAtom, keyFn));
}

Please note that in this case keyFn must be stable, either define outside render or warp with useCallback

useFreezeAtom

import { useAtom } from 'jotai'
import { freezeAtom } from 'jotai/utils'

export function useFreezeAtom(anAtom) {
    return useAtom(freezeAtom(anAtom))
}

useSplitAtom

import { useAtom } from 'jotai'
import { splitAtom } from 'jotai/utils'

export function useSplitAtom(anAtom) {
    return useAtom(splitAtom(anAtom))
}

integrations

useFocusAtom

import { useAtom } from 'jotai'
import { focusAtom } from 'jotai/optics'

export function useFocusAtom(anAtom, keyFn) {
    return useAtom(focusAtom(anAtom, keyFn))
}

Please note that in this case keyFn must be stable, either define outside render or warp with useCallback