Vue项目新一代状态管理工具Pinia的使用教程

yarn add pinia -S

import {createApp} from "vue"
import App from "./app.vue"
import store from "./store/index.js"
const app = createApp(App);
const store = createPinia();
app.use(store).mount("#app")

import {definePinia} from "pinia"
export default testStore = definePinia('testId',{
    state:()=>{
         tname:"test",
         tnum:0,
    },
    getters:{
       changeTnum(){
           console.log("getters")
           this.tnum++;
       }
    },
    actions:{
       addNum(val){
          this.tnum += val
       }
    },
    //持久化存储配置
    presist:{
         enable:true,//
         strategies:[
            {
            key:"testId",
            storage:localStorage,
            paths:['tnum']
            } 
         ]
    }
})

import {createPinia} from "pinia"
const store = createPinia();
export default store

<template>
    <div>
        <div> {{tname}}</div>
        <div> {{tid}}</div>
        <div> tnum: {{tnum}}</div>
        <div> {{tchangeNum}}</div>
        <div><button @click="tchangeName">修改</button></div>
        <div> <button @click="treset">重置</button></div>
        <div @click="actionsBtn">actionsBtn</div>
    </div>
</template>

<script setup>
import { storeToRefs } from 'pinia'
import { useStore } from '../store/user'
import { useTest } from '../store/test.js'
const testStore = useTest();
let { tname, tchangeNum, tnum } = storeToRefs(testStore)
</script>

//直接修改数据
tchangeName(){
     tname.value = "测试数据"；
     tnum.value++;
}
//当然也可以使用`$path`批量修改
tchangeName(){
     testStore.$path(state=>{
          state.tname = "测试数据"；
          state.value = 7;
     })
}

const actionsBtn = (){
      testStore.addNum(5)  
}

const treset = (){
    testStore.$reset()
}

import {createPinia} from "pinia"
import piniaPluginPresist from "pinia-plugin-presist"
const store = createPinia();
store.use(piniaPluginPresist)
export default store

import {definePinia} from "pinia"
export default testStore = definePinia('testId',{
    state:()=>{
         tname:"test",
         tnum:0,
    },
    getters:{
       changeTnum(){
           console.log("getters")
           this.tnum++;
       }
    },
    actions:{
       addNum(val){
          this.tnum += val
       }
    },
    //持久化存储配置
    presist:{
         enable:true,//
         strategies:[
            {
            key:"testId",
            storage:localStorage,
            paths:['tnum']
            } 
         ]
    }
})

import { defineStore } from 'pinia'
import { userStore } from "./user.js"
export const useTest = defineStore("testId", {
	state: () => {
		return {
			tid: "111",
			tname: "pinia",
			tnum: 0
		}
	},
	getters: {
		tchangeNum() {
			console.log('getters')
			return this.tnum + 100
		}
	},
	actions: {
		tupNum(val) {
			console.log('actions')
			this.tnum += val;
		},
		getUserData() {
			console.log(useStore().name);
			return useStore().name;
		},
	},
	persist: {
		//走的session
		enabled: true,
		strategies: [
			{
				key: "my_testId",
				storage: localStorage,
				paths: ['tnum']
			}
		]
	}
})

import { defineStore } from 'pinia'
export const useStore = defineStore('storeId', {
  state: () => {
    return {
      num: 0,
      name: '张三'
    }
  }
})

const actionBtn = () => {
    testStore.getUserData()
};