需求背景
一个select框 现在要求可多选 并且原有一个any的选项 其他选项为输入后回车自己增加 若选择了any 则其他选项不可选择反之选择其他选项any不可选择 并且回车新增时也不可直接加入到选中数组只加入到option内 并且不可重复添加新内容
实现过程
<Form.Item label={formatMessage({ id: 'label.alarm.SourceAddress' })} name="sourceAddress"><Selectmode="multiple"maxTagCount={3}showSearchsearchValue={inputValue}onChange={(e) => createSelectionHandler(e, 'any', sourceList, setSourceList)}placeholder={formatMessage({ id: 'select.placeholder' })}onSearch={setInputValue}onInputKeyDown={sourceHandleKeyDown}options={sourceList}getPopupContainer={(triggerNode) => triggerNode.parentElement || document.body}/></Form.Item>//js部分// 源地址列表const [sourceList, setSourceList] = useState([{ value: 'any', label: 'any', disabled: false }]);// 源地址输入框const [inputValue, setInputValue] = useState('');// 通用处理函数const createSelectionHandler = (specialValue, key, stateList, setState) => {const newList = stateList.map((item) => ({...item,disabled: specialValue.includes(key)? item.value !== key // 如果选中特殊值，禁用其他选项: specialValue.length > 0 // 如果选中普通值，禁用特殊值? item.value === key: false, // 没有选中时恢复默认}));setState(newList);};// 源地址处理键盘事件（回车）const sourceHandleKeyDown = (e) => {if (e.key === 'Enter' && inputValue.trim()) {const newValue = inputValue.trim();const lis = addAlarmForm.getFieldValue('sourceAddress');if (!lis.includes(newValue)) {if (lis.includes('any')) {setSourceList([...sourceList,{value: newValue,label: newValue,disabled: true,},]);} else {setSourceList([...sourceList,{value: newValue,label: newValue,disabled: false,},].map((item) => ({...item,disabled: item.value == 'any',})),);addAlarmForm.setFieldsValue({sourceAddress: [...lis, newValue],});}}setInputValue('');}};
