如何导入el-menu所需的组件

Question

Unknown custom element: <el-menu-collapse-transition> - did you register the component correctly? For recursive components, make sure to provide the "name" option.

Answer 1

不是让你导入组件，而是你用到了自定义组件<el-menu-collapse-transition>并没有被注册，注册方式：

<div id="example">
  <el-menu-collapse-transition></el-menu-collapse-transition>
</div>

<script>
import Vue from 'vue';
Vue.component('el-menu-collapse-transition', {
  template: '<div>A custom component!</div>'
})
</script>