Vue3学习-Pinia 集中式状态管理工具

灬ManongLai2024-05-26 19:36

安装 Pinia

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npm i pinia

Pinia 集中式状态管理工具官网传送门

引入 Pinia

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//引入
import { createPinia } from 'pinia'
const pinia = createPinia()
const app = createApp(App);
app.use(pinia);

使用

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// store 注册
import { defineStore } from "pinia";
export const useAStore = defineStore('a',{
    state(){
        return { a:1 }
    },
    getters: {
	   doubleCount: (state) => state.a * 2,
	},
	actions: {
	    increment(val) {
	      this.a = val
	    },
	},
})
// 组件获取
import { useAStore,storeToRefs } from '@/store/a'
const aStore = useAStore()
// 监听aStore 变化
aStore.$subscribe((mutate,state) => {
	console.log(mutate); // 行为
	console.log(state); // 改变后数据
});
let { a } = storeToRefs(aStore ) //store响应式数据，用于修改实时改变的值
console.log(aStore)
//修改
aStore.a += 1; // 单个
aStore.$patch({ // 批量
	a:2
});
aStore.increment(3)
// 获取getter
aStore.doubleCount()

组合式使用

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import { reactive, ref } from "vue";
import { defineStore } from "pinia";
export const useAStore = defineStore('a',{
    let a = ref('1')
    async function addAFun(){
    	a++
    }
    return { a,addAFun }
})