vue3+element-plus

以下是使用Vue 3.0+Element-Plus开发后台管理系统的步骤：

1.首先，确保你已经安装了Node.js和npm包管理器。

2.使用以下命令安装Vue CLI 4：

npm install -g @vue/cli

3.使用Vue CLI创建一个新项目：

vue create my-project

4.在创建项目时，选择使用Vue 3.0版本，并启用class-style component语法：

? Please pick a preset: Manually select features
? Check the features needed for your project: Choose Vue version, Babel, Router, Vuex, CSS Pre-processors, Linter, Unit
? Choose a version of Vue.js that you want to start the project with 3.x (Preview)
? Use class-style component syntax? Yes
? Use Babel alongside TypeScript (required for modern mode, auto-detected polyfills, transpiling JSX)? No
? Use history mode for router? (Requires proper server setup for index fallback in production) Yes
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Sass/SCSS (with dart-sass)
? Pick a linter / formatter config: ESLint with error prevention only
? Pick additional lint features: Lint on save
? Where do you prefer placing config for Babel, ESLint, etc.? In dedicated config files

5.安装Element-Plus和Echarts 5.0：

npm install element-plus echarts@5.0

6.在main.js中引入Element-Plus和Echarts：

import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
import ElementPlus from 'element-plus'
import 'element-plus/lib/theme-chalk/index.css'
import echarts from 'echarts'

const app = createApp(App)
app.use(store)
app.use(router)
app.use(ElementPlus)
app.config.globalProperties.$echarts = echarts
app.mount('#app')

7.现在你可以开始使用Element-Plus和Echarts来开发你的后台管理系统了。