VIP32/react/react高阶/project4/src/store/slices/count.js

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