vue-cli3.0按需引入Element UI

如果按照官网引入会报错

然后在main.js中引入

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
//引入组件名
import { Button} from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.config.productionTip = false;
//实例化组件
Vue.use(Button);
new Vue({
  router,
  store,
  render: h => h(App)
}).$mount('#app')