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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | 10x 10x 1x 10x 3x 10x 1x 10x 1x 10x | import { useCallback, useState } from 'react' /** * @public */ export type UseToggleResult = [ boolean, { (): void set(value: boolean): void true(): void false(): void }, ] /** * 布尔值切换器。 * * @public * @param initialValue 初始值 * @returns 返回结果和操作 * @example * ```typescript * const [value, toggle] = useToggle(false) // value: false * toggle() // value: true * toggle.set(false) // value: false * toggle.true() // => value: true * toggle.false() // => value: false * ``` */ export function useToggle(initialValue: boolean): UseToggleResult { const [value, setValue] = useState(initialValue) const toggle = (useCallback(() => { setValue(value => !value) }, []) as any) as UseToggleResult[1] toggle.set = useCallback(value => { setValue(value) }, []) toggle.true = useCallback(() => { setValue(true) }, []) toggle.false = useCallback(() => { setValue(false) }, []) return [value, toggle] } |