import { createSlice } from "@reduxjs/toolkit"; /** * 抛出: * export default * export const xxxx = 值 * export function xxx = 方法 */ // 1.创建切片 // 2.定义切片 // 3.抛出切片 export const countSlice = createSlice({ name: 'Count',//唯一性 // 定义状态初始值 initialState: { value: 0 }, reducers:{ addNum(state,action) { state.value++; }, reduceNum(state,action) { state.value--; } } }) export default countSlice.reducer; export const {addNum,reduceNum} = countSlice.actions