--- order: 5 title: zh-CN: 选择即改变 en-US: Change on select --- ## zh-CN 这种交互允许只选中父级选项。 ## en-US Allow only select parent options. ````jsx import { Cascader } from 'antd'; const options = [{ value: 'zhejiang', label: 'Zhejiang', children: [{ value: 'hangzhou', label: 'Hanzhou', children: [{ value: 'xihu', label: 'West Lake', }], }], }, { value: 'jiangsu', label: 'Jiangsu', children: [{ value: 'nanjing', label: 'Nanjing', children: [{ value: 'zhonghuamen', label: 'Zhong Hua Men', }], }], }]; function onChange(value) { console.log(value); } ReactDOM.render( , mountNode ); ````