element-plus怎么实现按需导入，具体操作是什么

按需导入：

安装插件

首先需要引入额外的插件：前**vite-plugin-components已重命名为unplugin-vue-components**

npm install unplugin-vue-components

配置插件

在weapack或vite配置文件内中添加配置

// vite.config.ts
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'
​
export default {
 plugins: [
  // ...
  Components({
   resolvers: [ElementPlusResolver()],
   }),
  ],
}

// webpack.config.js
const Components = require('unplugin-vue-components/webpack')
const { ElementPlusResolver } = require('unplugin-vue-components/resolvers')
​
module.exports = {
 // ...
 plugins: [
  Components({
   resolvers: [ElementPlusResolver()],
   }),
  ],
}

//main.ts
import { createApp } from 'vue'
import App from './App.vue'
​
import { Edit,Search } from '@element-plus/icons' //图标需要分开导入，按需导入图标
import { ElButton } from 'element-plus';  //按需导入
​
const app = createApp(App);
//注册组件
app.component("edit", Edit)
app.component("search", Search)
app.component('ElButton',ElButton)
app.mount('#app');

<template>
    <h2>home页面</h2>
  <el-button type="primary" >主要按钮</el-button>
  <el-button type="success" >成功按钮</el-button>
  <el-icon :size="20" :color="'blue'">
    <edit />
  </el-icon>
  <el-icon :size="20">
    <search></search>
  </el-icon>
</template>
<script setup lang="ts"> 
</script>

全局导入

推荐添加

// tsconfig.json
{
 "compilerOptions": {
  // ...
  "types": ["element-plus/global"]
  }
}

安装

npm install element-plus --save
# or
yarn add element-plus
​
# 安装icon图标依赖库
npm install @element-plus/icons
# or
yarn add @element-plus/icons

在main.ts 文件中全局配置

import { createApp } from 'vue'
import App from './App.vue'
import { store, key } from './store';
// 注入路由
import router from './router';
​
// 全局引入ui库
import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'
​
const app = createApp(App);
app.use(store, key);
app.use(router);
app.use(ElementPlus);
app.mount('#app');

使用ui组件

使用图标，因为图标和普通ui组件不是同一个包，使用需要分别导入

//导入具体的组件后直接使用
<template>
  <el-icon :size="20" :color="'blue'">
    <edit />
  </el-icon>
</template>
<script setup lang="ts">
  import { Edit } from '@element-plus/icons'
</script>

将图标库在main.ts文件中impott并使用app.component()注册便可以直接在组件中使用了，和普通的使用ui库同理

<template>
    <h2>home页面</h2>
  <el-button type="primary" >主要按钮</el-button>
  <el-button type="success" >成功按钮</el-button>
  <el-icon :size="20" :color="'blue'">
    <edit />
  </el-icon>
  <el-icon :size="20">
    <search></search>
  </el-icon>
</template>
<script setup lang="ts"> 
</script>