040.Vue3入门，在Vue3中引入ElementUI

1、npm install element-plus --save，安装UI

 2、main.js代码如下：

// import './assets/main.css'
// 引入下面这两行
import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'

import {createApp} from 'vue'
import App from './App.vue'
import Config from "@/config.js";


const app = createApp(App);
// 引入下面这一行
app.use(ElementPlus, {size: 'small', zIndex: 3000})

app.provide('Config', Config)

app.mount('#app')

 3、App.vue代码如下：

<template>
  <div class="mb-4">
    <el-button>Default</el-button>
    <el-button type="primary">Primary</el-button>
    <el-button type="success">Success</el-button>
    <el-button type="info">Info</el-button>
    <el-button type="warning">Warning</el-button>
    <el-button type="danger">Danger</el-button>
  </div>

  <div>
    <el-button :icon="Search" circle />
    <el-button type="primary" :icon="Edit" circle />
    <el-button type="success" :icon="Check" circle />
    <el-button type="info" :icon="Message" circle />
    <el-button type="warning" :icon="Star" circle />
    <el-button type="danger" :icon="Delete" circle />
  </div>
</template>

<script lang="ts" setup>
import {
  Check,
  Delete,
  Edit,
  Message,
  Search,
  Star,
} from '@element-plus/icons-vue'
</script>