--- order: 2 title: zh-CN: 移入展开 en-US: Hover --- ## zh-CN 通过移入展开下级菜单,点击完成选择。 ## en-US Hover to expand sub menu, click to select option. ````jsx import { Cascader } from 'antd'; const options = [{ value: 'zhejiang', label: '浙江', children: [{ value: 'hangzhou', label: '杭州', children: [{ value: 'xihu', label: '西湖', }], }], }, { value: 'jiangsu', label: '江苏', children: [{ value: 'nanjing', label: '南京', children: [{ value: 'zhonghuamen', label: '中华门', }], }], }]; function onChange(value) { console.log(value); } // 只展示最后一项 function displayRender(label) { return label[label.length - 1]; } ReactDOM.render( , mountNode); ````