ant-design-vue/components/select/demo/hide-selected.md

#### 隐藏已选择选项 隐藏下拉列表中已选择的选项。 #### Hide Already Selected Hide already selected options in the dropdown.

<template>
  <a-select
    mode="multiple"
    placeholder="Inserted are removed"
    :value="selectedItems"
    @change="handleChange"
    style="width: 100%"
  >
    <a-select-option v-for="item in filteredOptions" :key="item" :value="item">
      {{item}}
    </a-select-option>
  </a-select>
</template>
<script>
const OPTIONS = ['Apples', 'Nails', 'Bananas', 'Helicopters'];
export default {
  data() {
    return {
      selectedItems: [],
    }
  },
  computed: {
    filteredOptions() {
      return OPTIONS.filter(o => !this.selectedItems.includes(o));
    }
  },
  methods: {
    handleChange(selectedItems) {
      this.selectedItems = selectedItems
    }
  }
}
</script>