ant-design/components/collapse/demo/mix.md

# 面板嵌套

- order: 2

手风琴嵌套折叠面板。

---

````jsx
import { Collapse } from 'antd';
const Panel = Collapse.Panel;

function callback(key) {
  console.log(key);
}

const text = `
  A dog is a type of domesticated animal.
  Known for its loyalty and faithfulness,
  it can be found as a welcome guest in many households across the world.
`;

ReactDOM.render(
  <Collapse onChange={callback} accordion={true}>
    <Panel header={`This is panel header 1`} key="1">
      <Collapse defaultActiveKey="1">
        <Panel header={`This is panel nest panel`} key="1">
          <p>{text}</p>
        </Panel>
      </Collapse>
    </Panel>
    <Panel header={`This is panel header 2`} key="2">
      <p>{text}</p>
    </Panel>
    <Panel header={`This is panel header 3`} key="3">
      <p>{text}</p>
    </Panel>
  </Collapse>
, document.getElementById('components-collapse-demo-mix'));
````