1, 进入项目安装 

           npm install element3 -S

　　2, 在main.js中引入

        import { createApp } from "vue";

        import App from "./App.vue";

        import router from "./router";

        import Element3 from "element3";

        import "element-ui/lib/theme-chalk/index.css";

        createApp(App)

          .use(router)

          .use(Element3)

          .mount("#app");

    3. 调用

<div>
      <el-button icon="el-icon-circle-plus" type="primary">添加</el-button>
      <el-button round icon="el-icon-edit" type="warning">编辑</el-button>
      <el-button plain icon="el-icon-delete" type="danger">删除</el-button>
      <el-button plain round icon="el-icon-view" type="view">查看</el-button>
      <el-button circle icon="el-icon-share" type="success">成功</el-button>
    </div>

4. 结果如下: