w1020/15.vue3/vue-pinia/src/store/count.ts

import {defineStore} from 'pinia';

export const useCountStore = defineStore('count1',{
    // 1.state 相当于 data 数组的存储
    state() {
        return {
            num: 666
        }
    },
    // 2.getters 相当于 computed 计算属性
    getters:{
        bigNum:(state:any)=>{
            return state.num * 5;;
        }
    },
    // 3.actions 相当于 methods 方法
    actions:{
        addThing(val:number) {
            this.num += val;
        }
    }

});