import './demo4.css'; import 'whatwg-fetch'; import Cascader from '..'; import React from 'react'; import ReactDOM from 'react-dom'; interface PageStates { value: string; data: Array; } class Demo extends React.Component<{}, PageStates> { handleChange: (value: any, data: any, extra: any) => void; constructor(props) { super(props); this.handleChange = (value, data, extra) => { console.log(value, data, extra); }; this.state = { value: null, data: [], }; } componentDidMount() { fetch('https://os.alipayobjects.com/rmsportal/ODDwqcDFTLAguOvWEolX.json') .then(response => response.json()) .then(data => this.setState({ data, value: '2975' })) .catch(e => console.log(e)); } render() { return (


); } } ReactDOM.render(, document.getElementById('cascader-demo-4'));