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import React, { useState } from 'react';
import type { CascaderProps } from 'antd';
import { Cascader } from 'antd';
interface Option {
value?: string | number | null;
label: React.ReactNode;
children?: Option[];
isLeaf?: boolean;
}
const optionLists: Option[] = [
{
value: 'zhejiang',
label: 'Zhejiang',
isLeaf: false,
},
{
value: 'jiangsu',
label: 'Jiangsu',
isLeaf: false,
},
];
const App: React.FC = () => {
const [options, setOptions] = useState<Option[]>(optionLists);
const onChange: CascaderProps<Option>['onChange'] = (value, selectedOptions) => {
console.log(value, selectedOptions);
};
const loadData = (selectedOptions: Option[]) => {
const targetOption = selectedOptions[selectedOptions.length - 1];
// load options lazily
setTimeout(() => {
targetOption.children = [
{
label: `${targetOption.label} Dynamic 1`,
value: 'dynamic1',
},
{
label: `${targetOption.label} Dynamic 2`,
value: 'dynamic2',
},
];
setOptions([...options]);
}, 1000);
};
return <Cascader options={options} loadData={loadData} onChange={onChange} changeOnSelect />;
};
export default App;
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