ant-design-vue/examples/App.vue

<template>
  <a-dropdown>
    <a class="ant-dropdown-link" @click="e => e.preventDefault()">
      Cascading menu <DownOutlined />
    </a>
    <template #overlay>
      <a-menu>
        <a-menu-item>1st menu item</a-menu-item>
        <a-menu-item>2nd menu item</a-menu-item>
        <a-sub-menu key="test" title="sub menu">
          <a-menu-item>3rd menu item</a-menu-item>
          <a-menu-item>4th menu item</a-menu-item>
        </a-sub-menu>
        <a-sub-menu title="disabled sub menu" disabled>
          <a-menu-item>5d menu item</a-menu-item>
          <a-menu-item>6th menu item</a-menu-item>
        </a-sub-menu>
      </a-menu>
    </template>
  </a-dropdown>
</template>
<script>
import { DownOutlined } from '@ant-design/icons-vue';

export default {
  components: {
    DownOutlined,
  },
};
</script>