[JavaScript知识库]vue3+element_plus按需引入

npm install element-plus

一丶main.js里配置：

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/dist/index.css";
import { components } from "./plugins/element";
const app = createApp(App);
for (const cpn of components) {
  app.component(cpn.name, cpn);
}
app.use(store);
app.use(router);
//?app.use(ElementPlus)
app.mount("#app");

二丶src下创建一个plugins文件夹,文件夹里创建一个element.ts文件 ：

import {
  ElButton,
  ElTable,
  ElAlert,
  ElAside,
  ElAutocomplete,
  ElAvatar,
  ElBacktop,
  ElBadge,
} from "element-plus";

export const components = [
  ElButton,
  ElTable,
  ElAlert,
  ElAside,
  ElAutocomplete,
  ElAvatar,
  ElBacktop,
  ElBadge,
];

三丶组件内引入

<script>
import { defineComponent } from "vue";
import { ElButton } from "element-plus";
export default defineComponent({
  name: "App",
  components: {
    ElButton,
  },
});
</script>

四丶使用

    <el-button type="danger">危险按钮</el-button>