RESET
引用: https://github.com/pmndrs/jotai/issues/217
const RESET: unique symbol;
可重置原子 接受的特殊值,使用 atomWithReset
、atomWithDefault
或使用 atom
创建的可写原子,如果它接受 RESET
符号。
示例
import { atom } from "jotai";import { atomWithReset, useResetAtom, RESET } from "jotai/utils";const dollarsAtom = atomWithReset(0);const centsAtom = atom((get) => get(dollarsAtom) * 100,(get, set, newValue: number | typeof RESET) =>set(dollarsAtom, newValue === RESET ? newValue : newValue / 100));const ResetExample = () => {const setDollars = useUpdateAtom(dollarsAtom);const resetCents = useResetAtom(centsAtom);return (<><button onClick={() => setDollars(RESET)}>Reset dollars</button><button onClick={resetCents}>Reset cents</button></>);};