01、输入npm install pinia
02、main.js代码如下:
// 引入createApp用于创建Vue实例 import {createApp} from 'vue' // 引入App.vue根组件 import App from './App.vue'//第一步:引入pinia import {createPinia} from 'pinia'const app = createApp(App);//第二步:创建pinia实例 const pinia = createPinia() //第三步:将pinia实例挂载到Vue实例上 app.use(pinia)// App.vue的根元素id为app app.mount('#app')
03、创建一个store目录,并创建count.ts代码如下:
import {defineStore} from 'pinia'export const useCountStore =defineStore('count', {//真正储存数据的地方 state() {return {sum: 6,talklist: [{id: 'a001', title: '1今天你想我了没'},{id: 'a002', title: '2今天你想我了没'},{id: 'a003', title: '3今天你想我了没'},]}}})
04、目录结构如下:
05、App.vue代码如下:
<template><div class="app"><h2 class="title">App.Vue</h2><Page1/><br><Page2/></div> </template><script lang="ts" setup name="App"> import Page1 from "@/view/Page1.vue"; import Page2 from "@/view/Page2.vue"; </script><style scoped> .app {background-color: #ddd;box-shadow: 0 0 10px;border-radius: 10px;padding: 20px; }.nav-button {display: inline-block; /* 让链接显示为块级元素,以便应用宽度和高度 */padding: 10px 20px; /* 内边距 */margin: 0 5px; /* 外边距,用于按钮之间的间隔 */text-decoration: none; /* 移除下划线 */color: white; /* 文本颜色 */background-color: #007bff; /* 背景颜色 */border-radius: 5px; /* 边框圆角 */transition: background-color 0.3s; /* 平滑过渡效果 */ }.nav-button:hover {background-color: #0056b3; /* 鼠标悬停时的背景颜色 */ }.nav-button.router-link-active {background-color: #28a745; /* 当前激活(路由匹配)时的背景颜色 */ }.mai-content {/* 添加边框样式 */border: 2px solid #000; /* 边框宽度、样式和颜色 */border-radius: 5px; /* 可选:添加边框圆角 */padding: 20px; /* 可选:给内部内容添加一些内边距 */margin: 20px; /* 可选:给元素添加一些外边距,以便与其他元素隔开 */ } </style>
06、Page1.vue代码如下:
<template><div class="mypage"><h2>当前求和为:{{ countStore.sum }}</h2><select v-model="n"><option :value="1">1</option><option :value="2">2</option><option :value="3">3</option></select><button @click="add">加</button><button @click="min">减</button></div> </template><script lang="ts" name="page1" setup> import {ref} from "vue"; import {useCountStore} from "@/store/count";const countStore = useCountStore(); console.log('@@@',countStore);let sum = ref(1); let n = ref(1);function add() {sum.value += n.value; }function min() {sum.value -= n.value; } </script><style scoped> .mypage {background-color: #ddd;box-shadow: 0 0 10px;border-radius: 10px;padding: 20px;button {margin: 0 5px;} } </style>
07、Page2.vue代码如下:
<template><div class="mypage"><ul><li v-for="talk in myTalkStore.talklist" :key="talk.id">{{ talk.id }} -- {{ talk.title }}</li><br><li v-for="talk in myTalkStore.$state.talklist" :key="talk.id">{{ talk.id }} -- {{ talk.title }}</li></ul></div> </template><script lang="ts" name="page2" setup> import {useCountStore} from "@/store/count";const myTalkStore = useCountStore(); </script> <style scoped> .mypage {background-color: #ddd;box-shadow: 0 0 10px;border-radius: 10px;padding: 20px;button {margin: 0 5px;} } </style>
08、界面如下:
09、浏览器打开界面如下: