vue2按需导入Element（vite打包）

1.安装element

说明：-S是生产依赖。

npm install element-ui@2 -S

2.安装babel-plugin-component

说明：-D是开发模式使用。

npm install babel-plugin-component -D

3. vite.config.js

说明：借助 babel-plugin-component
，我们可以只引入需要的组件，以达到减小项目体积的目的。

import {createVuePlugin} from "vite-plugin-vue2"export default {"presets": [["es2015", { "modules": false }]],plugins:[createVuePlugin(),  ["component",{"libraryName": "element-ui","styleLibraryName": "theme-chalk"}]],
}

4. main.js

import Vue from "vue"
import App from "./App.vue"
//仅导入了button.css
import 'element-ui/lib/theme-chalk/button.css';
//按需导入Button
import { Button} from 'element-ui';import router from "./router/index.js"import store  from "./store/index.js";Vue.component(Button.name, Button);new Vue({el:"#app",router,store,render:(h)=>h(App),
}).$mount();

5.vue组件

<template><div>{{ this.$store.state.msg }}   我是首页<el-row><el-button plain>朴素按钮</el-button><el-button type="primary" plain>主要按钮</el-button><el-button type="success" plain>成功按钮</el-button><el-button type="info" plain>信息按钮</el-button><el-button type="warning" plain>警告按钮</el-button><el-button type="danger" plain>危险按钮</el-button></el-row></div></template><script>export default {name: 'Index.vue',};
</script><style scoped></style>

6. 启动

 

说明：没有引入el-row。

import Vue from "vue"//引入button样式
import 'element-ui/lib/theme-chalk/row.css';
import 'element-ui/lib/theme-chalk/button.css';import App from "./App.vue"//按需导入Button,Row
import { Button,Row} from 'element-ui';import router from "./router/index.js"import store  from "./store/index.js";Vue.component(Row.name,Row);
Vue.component(Button.name, Button);new Vue({el:"#app",router,store,render:(h)=>h(App),
}).$mount();

 7. 展示