# 基本 - order: 0 省市区级联。 --- ````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); } ReactDOM.render( , mountNode); ````