Vue3多选下拉列表实现与优化指南

1. Vue3中实现点击input显示多选下拉列表的核心思路

在Vue3中实现点击input触发多选下拉列表，本质上是在构建一个增强版的表单控件。这个功能在后台管理系统、数据筛选界面等场景中极为常见。与传统的select多选不同，这种实现方式提供了更灵活的UI定制能力。

核心交互逻辑是这样的：当用户点击input框时，下方弹出可多选的下拉列表，选中项以tag形式展示在input区域内。这种设计比原生select多选更美观，且允许自定义选项样式和搜索过滤功能。

2. 基础实现方案与组件结构

2.1 组件基础模板

我们先搭建最基本的组件结构：

<template> <div class="multi-select"> <div class="input-container" @click="toggleDropdown"> <input type="text" readonly :value="selectedLabels" placeholder="请选择..." /> <span class="arrow-icon">{{ isOpen ? '▲' : '▼' }}</span> </div> <div v-show="isOpen" class="dropdown-menu"> <div v-for="option in options" :key="option.value" class="dropdown-item" @click="toggleOption(option)" > <input type="checkbox" :checked="isSelected(option.value)" @click.stop /> <span>{{ option.label }}</span> </div> </div> </div> </template>

2.2 核心状态管理

使用Vue3的reactive管理组件状态：

import { reactive, computed } from 'vue' export default { props: { options: { type: Array, default: () => [] }, modelValue: { type: Array, default: () => [] } }, setup(props, { emit }) { const state = reactive({ isOpen: false, selectedValues: [...props.modelValue] }) const selectedLabels = computed(() => { return props.options .filter(opt => state.selectedValues.includes(opt.value)) .map(opt => opt.label) .join(', ') }) const toggleDropdown = () => { state.isOpen = !state.isOpen } const toggleOption = (option) => { const index = state.selectedValues.indexOf(option.value) if (index === -1) { state.selectedValues.push(option.value) } else { state.selectedValues.splice(index, 1) } emit('update:modelValue', [...state.selectedValues]) } const isSelected = (value) => { return state.selectedValues.includes(value) } return { ...toRefs(state), selectedLabels, toggleDropdown, toggleOption, isSelected } } }

3. 功能增强与优化

3.1 添加搜索过滤功能

实际项目中，选项较多时需要搜索功能：

<template> <!-- 在dropdown-menu顶部添加 --> <div class="search-box"> <input v-model="searchQuery" type="text" placeholder="搜索..." @click.stop /> </div> </template> <script> // 在setup中添加 const searchQuery = ref('') const filteredOptions = computed(() => { if (!searchQuery.value) return props.options return props.options.filter(opt => opt.label.toLowerCase().includes(searchQuery.value.toLowerCase()) ) }) </script>

3.2 实现键盘导航

提升无障碍访问体验：

// 在setup中添加 const focusedIndex = ref(-1) const handleKeyDown = (e) => { if (!state.isOpen) return switch(e.key) { case 'ArrowDown': e.preventDefault() focusedIndex.value = Math.min(focusedIndex.value + 1, filteredOptions.value.length - 1) break case 'ArrowUp': e.preventDefault() focusedIndex.value = Math.max(focusedIndex.value - 1, 0) break case 'Enter': if (focusedIndex.value >= 0) { toggleOption(filteredOptions.value[focusedIndex.value]) } break case 'Escape': state.isOpen = false break } } // 记得在模板中添加键盘事件监听

4. 样式设计与交互优化

4.1 基础样式实现

.multi-select { position: relative; width: 300px; } .input-container { position: relative; border: 1px solid #dcdfe6; border-radius: 4px; padding: 8px 15px; cursor: pointer; } .input-container input { border: none; outline: none; width: 100%; cursor: pointer; } .arrow-icon { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); } .dropdown-menu { position: absolute; top: 100%; left: 0; width: 100%; max-height: 250px; overflow-y: auto; border: 1px solid #dcdfe6; border-radius: 4px; background: white; z-index: 1000; box-shadow: 0 2px 12px 0 rgba(0,0,0,.1); } .dropdown-item { padding: 8px 15px; display: flex; align-items: center; cursor: pointer; } .dropdown-item:hover { background-color: #f5f7fa; } .dropdown-item input[type="checkbox"] { margin-right: 8px; }

4.2 选中项标签化展示

改进selectedLabels的展示方式：

<template> <div class="input-container" @click="toggleDropdown"> <div class="selected-tags"> <span v-for="value in selectedValues" :key="value" class="tag" > {{ getLabel(value) }} <span class="remove-tag" @click.stop="removeTag(value)">×</span> </span> </div> <input type="text" readonly :placeholder="selectedValues.length ? '' : '请选择...'" /> </div> </template> <style> .selected-tags { display: flex; flex-wrap: wrap; gap: 4px; position: absolute; left: 10px; top: 50%; transform: translateY(-50%); pointer-events: none; } .tag { background: #f0f2f5; padding: 0 8px; border-radius: 4px; display: flex; align-items: center; pointer-events: auto; } .remove-tag { margin-left: 4px; cursor: pointer; } .remove-tag:hover { color: #f56c6c; } </style>

5. 高级功能实现

5.1 虚拟滚动优化

当选项很多时（如超过1000条），使用虚拟滚动提升性能：

<template> <div class="dropdown-menu" @scroll="handleScroll"> <div class="dropdown-content" :style="{ height: `${totalHeight}px` }"> <div v-for="visibleOption in visibleOptions" :key="visibleOption.data.value" class="dropdown-item" :style="{ transform: `translateY(${visibleOption.offset}px)` }" > <!-- 选项内容 --> </div> </div> </div> </template> <script> import { computed, ref } from 'vue' export default { setup() { const itemHeight = 36 const scrollTop = ref(0) const visibleCount = computed(() => Math.ceil(250 / itemHeight) + 5) // 可视区域显示数量 const visibleOptions = computed(() => { const start = Math.floor(scrollTop.value / itemHeight) const end = start + visibleCount.value return filteredOptions.value .slice(start, end) .map((option, index) => ({ data: option, offset: (start + index) * itemHeight })) }) const totalHeight = computed(() => filteredOptions.value.length * itemHeight) const handleScroll = (e) => { scrollTop.value = e.target.scrollTop } return { visibleOptions, totalHeight, handleScroll } } } </script> <style> .dropdown-content { position: relative; } .dropdown-item { position: absolute; left: 0; right: 0; height: 36px; } </style>

5.2 远程搜索与懒加载

对于大量数据的场景，实现远程搜索：

const isLoading = ref(false) const handleSearch = debounce(async (query) => { if (query.length < 2) return isLoading.value = true try { const res = await api.fetchOptions({ query }) options.value = res.data } finally { isLoading.value = false } }, 500) // 在模板中添加加载状态指示器

6. 常见问题与解决方案

6.1 点击外部关闭下拉框

import { onClickOutside } from '@vueuse/core' const dropdownRef = ref(null) onClickOutside(dropdownRef, () => { state.isOpen = false }) // 记得在模板的根元素上添加ref="dropdownRef"

6.2 表单验证集成

与Vuelidate或VeeValidate集成：

// 在父组件中使用 import { useVuelidate } from '@vuelidate/core' import { required } from '@vuelidate/validators' export default { setup() { const selectedValues = ref([]) const rules = { selectedValues: { required } } const v$ = useVuelidate(rules, { selectedValues }) return { v$, selectedValues } } }

6.3 性能优化技巧

1. 避免不必要的重新渲染：

   • 对options使用shallowRef
   • 复杂的计算属性使用computed的缓存特性

2. 事件处理优化：

   • 使用事件委托减少事件监听器数量
   • 高频事件（如scroll）使用防抖/节流

3. 内存管理：

   • 大数据量时使用虚拟滚动
   • 不使用的数据及时清理

7. 完整组件代码示例

以下是整合了所有功能的完整实现：

<template> <div class="multi-select" ref="dropdownRef"> <div class="input-container" @click="toggleDropdown"> <div class="selected-tags"> <span v-for="value in selectedValues" :key="value" class="tag" > {{ getLabel(value) }} <span class="remove-tag" @click.stop="removeTag(value)">×</span> </span> </div> <input type="text" readonly :placeholder="selectedValues.length ? '' : placeholder" @keydown="handleKeyDown" /> <span class="arrow-icon">{{ isOpen ? '▲' : '▼' }}</span> <span v-if="isLoading" class="loading-icon">⏳</span> </div> <div v-show="isOpen" class="dropdown-menu" @scroll="handleScroll"> <div class="search-box" v-if="searchable"> <input v-model="searchQuery" type="text" :placeholder="searchPlaceholder" @click.stop /> </div> <div v-if="filteredOptions.length === 0" class="empty-tip"> {{ emptyText }} </div> <div class="dropdown-content" :style="{ height: `${totalHeight}px` }"> <div v-for="visibleOption in visibleOptions" :key="visibleOption.data.value" class="dropdown-item" :class="{ 'is-focused': focusedIndex === visibleOption.index }" :style="{ transform: `translateY(${visibleOption.offset}px)` }" @click="toggleOption(visibleOption.data)" > <input type="checkbox" :checked="isSelected(visibleOption.data.value)" @click.stop /> <span>{{ visibleOption.data.label }}</span> </div> </div> </div> </div> </template> <script> import { ref, computed, watch, nextTick } from 'vue' import { onClickOutside } from '@vueuse/core' import { debounce } from 'lodash-es' export default { name: 'MultiSelect', props: { options: { type: Array, default: () => [], validator: value => value.every(opt => 'value' in opt && 'label' in opt) }, modelValue: { type: Array, default: () => [] }, placeholder: { type: String, default: '请选择...' }, searchable: { type: Boolean, default: false }, searchPlaceholder: { type: String, default: '搜索...' }, emptyText: { type: String, default: '无匹配选项' }, itemHeight: { type: Number, default: 36 } }, emits: ['update:modelValue', 'change', 'search'], setup(props, { emit }) { const dropdownRef = ref(null) const isOpen = ref(false) const selectedValues = ref([...props.modelValue]) const searchQuery = ref('') const isLoading = ref(false) const scrollTop = ref(0) const focusedIndex = ref(-1) const filteredOptions = computed(() => { let result = props.options if (props.searchable && searchQuery.value) { result = result.filter(opt => opt.label.toLowerCase().includes(searchQuery.value.toLowerCase()) ) } return result }) const visibleCount = computed(() => Math.ceil(250 / props.itemHeight) + 5) const visibleOptions = computed(() => { const start = Math.floor(scrollTop.value / props.itemHeight) const end = start + visibleCount.value return filteredOptions.value .slice(start, end) .map((option, index) => ({ data: option, index: start + index, offset: (start + index) * props.itemHeight })) }) const totalHeight = computed(() => filteredOptions.value.length * props.itemHeight) const getLabel = (value) => { const option = props.options.find(opt => opt.value === value) return option ? option.label : value } const toggleDropdown = () => { isOpen.value = !isOpen.value if (isOpen.value) { nextTick(() => { focusedIndex.value = -1 }) } } const toggleOption = (option) => { const index = selectedValues.value.indexOf(option.value) if (index === -1) { selectedValues.value.push(option.value) } else { selectedValues.value.splice(index, 1) } emit('update:modelValue', [...selectedValues.value]) emit('change', [...selectedValues.value]) } const removeTag = (value) => { const index = selectedValues.value.indexOf(value) if (index !== -1) { selectedValues.value.splice(index, 1) emit('update:modelValue', [...selectedValues.value]) emit('change', [...selectedValues.value]) } } const isSelected = (value) => { return selectedValues.value.includes(value) } const handleKeyDown = (e) => { if (!isOpen.value && ['ArrowDown', 'ArrowUp', 'Enter'].includes(e.key)) { isOpen.value = true e.preventDefault() return } if (!isOpen.value) return switch(e.key) { case 'ArrowDown': e.preventDefault() focusedIndex.value = Math.min(focusedIndex.value + 1, filteredOptions.value.length - 1) scrollToOption(focusedIndex.value) break case 'ArrowUp': e.preventDefault() focusedIndex.value = Math.max(focusedIndex.value - 1, 0) scrollToOption(focusedIndex.value) break case 'Enter': if (focusedIndex.value >= 0) { toggleOption(filteredOptions.value[focusedIndex.value]) } break case 'Escape': isOpen.value = false break } } const scrollToOption = (index) => { const dropdownEl = dropdownRef.value?.querySelector('.dropdown-menu') if (!dropdownEl) return const itemTop = index * props.itemHeight const itemBottom = itemTop + props.itemHeight const scrollBottom = scrollTop.value + dropdownEl.clientHeight if (itemTop < scrollTop.value) { dropdownEl.scrollTop = itemTop } else if (itemBottom > scrollBottom) { dropdownEl.scrollTop = itemBottom - dropdownEl.clientHeight } } const handleScroll = (e) => { scrollTop.value = e.target.scrollTop } const handleSearch = debounce((query) => { emit('search', query) }, 500) watch(searchQuery, (value) => { if (props.searchable) { handleSearch(value) } }) watch(() => props.modelValue, (newVal) => { selectedValues.value = [...newVal] }) onClickOutside(dropdownRef, () => { isOpen.value = false }) return { dropdownRef, isOpen, selectedValues, searchQuery, isLoading, filteredOptions, visibleOptions, totalHeight, getLabel, toggleDropdown, toggleOption, removeTag, isSelected, handleKeyDown, handleScroll, focusedIndex } } } </script> <style scoped> .multi-select { position: relative; width: 300px; font-size: 14px; } .input-container { position: relative; border: 1px solid #dcdfe6; border-radius: 4px; padding: 8px 30px 8px 15px; min-height: 40px; cursor: pointer; background: white; } .input-container:hover { border-color: #c0c4cc; } .input-container input { border: none; outline: none; width: 100%; cursor: pointer; background: transparent; height: 24px; line-height: 24px; } .selected-tags { display: flex; flex-wrap: wrap; gap: 4px; position: absolute; left: 10px; top: 50%; transform: translateY(-50%); pointer-events: none; max-width: calc(100% - 50px); } .tag { background: #f0f2f5; padding: 0 8px; border-radius: 4px; display: flex; align-items: center; height: 24px; line-height: 24px; pointer-events: auto; } .remove-tag { margin-left: 4px; cursor: pointer; font-size: 12px; } .remove-tag:hover { color: #f56c6c; } .arrow-icon { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); color: #c0c4cc; transition: transform 0.3s; } .loading-icon { position: absolute; right: 30px; top: 50%; transform: translateY(-50%); } .dropdown-menu { position: absolute; top: 100%; left: 0; width: 100%; max-height: 250px; overflow-y: auto; border: 1px solid #dcdfe6; border-radius: 4px; background: white; z-index: 1000; box-shadow: 0 2px 12px 0 rgba(0,0,0,.1); margin-top: 4px; } .search-box { padding: 8px; border-bottom: 1px solid #ebeef5; } .search-box input { width: 100%; padding: 8px; border: 1px solid #dcdfe6; border-radius: 4px; outline: none; } .search-box input:focus { border-color: #409eff; } .dropdown-content { position: relative; } .dropdown-item { position: absolute; left: 0; right: 0; height: v-bind('itemHeight + "px"'); padding: 0 15px; display: flex; align-items: center; cursor: pointer; box-sizing: border-box; } .dropdown-item:hover { background-color: #f5f7fa; } .dropdown-item input[type="checkbox"] { margin-right: 8px; cursor: pointer; } .dropdown-item.is-focused { background-color: #ecf5ff; } .empty-tip { padding: 10px 15px; color: #909399; text-align: center; } </style>

8. 组件使用示例

8.1 基础用法

<template> <MultiSelect v-model="selectedItems" :options="options" /> </template> <script> import { ref } from 'vue' import MultiSelect from './components/MultiSelect.vue' export default { components: { MultiSelect }, setup() { const selectedItems = ref([]) const options = ref([ { value: '1', label: '选项1' }, { value: '2', label: '选项2' }, { value: '3', label: '选项3' } ]) return { selectedItems, options } } } </script>

8.2 带搜索功能

<template> <MultiSelect v-model="selectedItems" :options="options" searchable @search="handleSearch" /> </template> <script> import { ref } from 'vue' import MultiSelect from './components/MultiSelect.vue' export default { components: { MultiSelect }, setup() { const selectedItems = ref([]) const options = ref([]) const handleSearch = async (query) => { const res = await fetchOptions(query) options.value = res } return { selectedItems, options, handleSearch } } } </script>

8.3 表单验证集成

<template> <form @submit.prevent="submit"> <MultiSelect v-model="form.tags" :options="tagOptions" /> <span v-if="v$.tags.$error" class="error">请至少选择一个标签</span> <button type="submit">提交</button> </form> </template> <script> import { useVuelidate } from '@vuelidate/core' import { required } from '@vuelidate/validators' import MultiSelect from './components/MultiSelect.vue' export default { components: { MultiSelect }, setup() { const form = reactive({ tags: [] }) const rules = { tags: { required } } const v$ = useVuelidate(rules, form) const submit = async () => { const isValid = await v$.value.$validate() if (!isValid) return // 提交逻辑 } return { form, v$, submit } } } </script>

9. 性能优化与最佳实践

1. 选项数据量大时的处理：

   • 使用虚拟滚动（如前文实现）
   • 分页加载或无限滚动
   • 使用Web Worker处理复杂过滤逻辑

2. 内存管理：

   • 对于动态选项，使用shallowRef减少响应式开销
   • 及时清理不再使用的数据引用

3. 事件处理优化：

   • 高频事件（如scroll、resize）使用防抖/节流
   • 使用事件委托减少事件监听器数量

4. 无障碍访问：

   • 完整的键盘导航支持
   • 适当的ARIA属性
   • 焦点管理

5. 样式隔离：

   • 使用scoped样式或CSS Modules
   • 避免全局样式污染
   • 提供主题定制能力

10. 与其他Vue3特性的结合

10.1 与Composition API深度集成

// 在组件外部提供可复用的多选逻辑 export function useMultiSelect(options, initialValue = []) { const selectedValues = ref([...initialValue]) const selectedLabels = computed(() => { return options.value .filter(opt => selectedValues.value.includes(opt.value)) .map(opt => opt.label) }) const toggleOption = (value) => { const index = selectedValues.value.indexOf(value) if (index === -1) { selectedValues.value.push(value) } else { selectedValues.value.splice(index, 1) } } return { selectedValues, selectedLabels, toggleOption } }

10.2 与Provide/Inject实现跨组件状态共享

// 父组件 import { provide } from 'vue' export default { setup() { const multiSelectState = reactive({ options: [], selected: [] }) provide('multiSelectContext', multiSelectState) return { multiSelectState } } } // 子组件 import { inject } from 'vue' export default { setup() { const { options, selected } = inject('multiSelectContext') return { options, selected } } }

10.3 与Teleport实现弹出层

<template> <div class="multi-select"> <!-- 输入框部分 --> <Teleport to="body"> <div v-show="isOpen" class="dropdown-menu" :style="dropdownStyle" > <!-- 下拉内容 --> </div> </Teleport> </div> </template> <script> export default { setup() { const inputRect = ref(null) const dropdownStyle = computed(() => { if (!inputRect.value) return {} return { position: 'fixed', top: `${inputRect.value.bottom + window.scrollY}px`, left: `${inputRect.value.left + window.scrollX}px`, width: `${inputRect.value.width}px` } }) const updatePosition = () => { const inputEl = document.querySelector('.input-container') if (inputEl) { inputRect.value = inputEl.getBoundingClientRect() } } return { dropdownStyle, updatePosition } } } </script>

11. 测试策略

11.1 单元测试要点

import { mount } from '@vue/test-utils' import MultiSelect from '@/components/MultiSelect.vue' describe('MultiSelect', () => { it('正确渲染选项', async () => { const options = [ { value: '1', label: '选项1' }, { value: '2', label: '选项2' } ] const wrapper = mount(MultiSelect, { props: { options } }) await wrapper.find('.input-container').trigger('click') expect(wrapper.findAll('.dropdown-item').length).toBe(2) }) it('正确切换选中状态', async () => { const options = [ { value: '1', label: '选项1' } ] const wrapper = mount(MultiSelect, { props: { options } }) await wrapper.find('.input-container').trigger('click') await wrapper.find('.dropdown-item').trigger('click') expect(wrapper.emitted('update:modelValue')[0]).toEqual([['1']]) await wrapper.find('.dropdown-item').trigger('click') expect(wrapper.emitted('update:modelValue')[1]).toEqual([[]]) }) })

11.2 E2E测试场景

describe('MultiSelect E2E', () => { it('完整交互流程', () => { cy.visit('/') // 初始状态 cy.get('.multi-select').should('exist') cy.get('.dropdown-menu').should('not.be.visible') // 点击展开 cy.get('.input-container').click() cy.get('.dropdown-menu').should('be.visible') // 选择选项 cy.get('.dropdown-item').first().click() cy.get('.tag').should('have.length', 1) // 移除标签 cy.get('.remove-tag').click() cy.get('.tag').should('have.length', 0) // 搜索功能 cy.get('.search-box input').type('测试') cy.get('.dropdown-item').should('have.length.greaterThan', 0) }) })

12. 扩展思路

12.1 支持分组选项

const groupedOptions = computed(() => { const groups = {} props.options.forEach(option => { const group = option.group || '默认分组' if (!groups[group]) { groups[group] = [] } groups[group].push(option) }) return Object.entries(groups).map(([name, items]) => ({ name, items })) })

12.2 支持自定义选项模板

<template> <div class="dropdown-item"> <slot name="option" :option="visibleOption.data"> <!-- 默认渲染 --> <input type="checkbox" :checked="isSelected(visibleOption.data.value)" /> <span>{{ visibleOption.data.label }}</span> </slot> </div> </template> <!-- 使用 --> <MultiSelect :options="options"> <template #option="{ option }"> <div style="display: flex; align-items: center;"> <img :src="option.icon" width="20" style="margin-right: 8px;"> <span>{{ option.label }}</span> <span style="margin-left: auto; color: #999;">{{ option.count }}</span> </div> </template> </MultiSelect>

12.3 支持多选模式切换

const modes = { multiple: '多选', single: '单选', tags: '标签' } const currentMode = ref('multiple') const handleSelect = (option) => { if (currentMode.value === 'single') { selectedValues.value = [option.value] } else if (currentMode.value === 'tags') { if (!selectedValues.value.includes(option.value)) { selectedValues.value.push(option.value) } } else { toggleOption(option) } }

13. 与其他UI库的对比

13.1 与Element Plus的Select比较

优势：

• 更轻量，无依赖
• 完全可定制的UI
• 更灵活的选项渲染
• 更容易扩展功能

不足：

• 缺少内置的表单验证集成
• 无障碍支持需要自行实现
• 缺少一些高级功能（如远程搜索的loading状态）

13.2 与Ant Design Vue的Select比较

优势：

• Vue3原生支持
• 更简单的API设计
• 样式更容易定制
• 性能优化空间更大

不足：

• 缺少一些企业级功能
• 社区支持相对较小
• 文档和示例不够完善

14. 实际应用案例

14.1 电商平台商品筛选

<template> <MultiSelect v-model="selectedCategories" :options="categories" placeholder="选择商品分类" searchable @search="searchCategories" /> </template> <script> export default { setup() { const selectedCategories = ref([]) const categories = ref([]) const searchCategories = debounce(async (query) => { const res = await api.fetchCategories({ query }) categories.value = res.data.map(item => ({ value: item.id, label: item.name, count: item.product_count })) }, 300) return { selectedCategories, categories, searchCategories } } } </script>

14.2 后台管理系统权限配置

<template> <MultiSelect v-model="form.permissions" :options="permissionOptions" mode="tags" placeholder="分配权限" /> </template> <script> export default { setup() { const form = ref({ permissions: [] }) const permissionOptions = ref([ { value: 'user:create', label: '创建用户' }, { value: 'user:delete', label: '删除用户' }, { value: 'post:edit', label: '编辑文章' } ]) return { form, permissionOptions } } } </script>

15. 总结与个人实践建议

在Vue3中实现一个功能完善的多选下拉组件需要考虑诸多细节，从基础功能到性能优化，再到无障碍访问和测试覆盖。通过这个组件的开发过程，我总结了以下几点实践经验：

1. 渐进式增强：先实现核心功能，再逐步添加搜索、虚拟滚动等高级特性。

2. 性能为先：对于表单控件类组件，性能直接影响用户体验，要特别关注渲染效率和响应速度。

3. 可访问性不容忽视：键盘导航和ARIA属性可能增加开发成本，但对部分用户至关重要。

4. 测试驱动开发：特别是对于复杂交互逻辑，先写测试用例能有效减少回归问题。

5. 适度抽象：在灵活性和易用性之间找到平衡，既要提供定制能力，又要保持简单API。

在实际项目中，我会根据具体需求决定是使用这个自定义组件还是成熟的UI库方案。对于需要高度定制或有特殊性能要求的场景，自定义组件是更好的选择；而对于快速开发和标准化界面，Element Plus或Ant Design Vue可能更合适。