@aliretail/react-materials-components/demo/FormHelpExtra/example.md

B 端物料组件库

---
title: FormHelpExtra-Simple
order: 2
---

```jsx
import React, { Component } from 'react';
import ReactDOM from 'react-dom';
import { FormHelpExtra } from '@aliretail/react-materials-components';

class App extends Component {
  render() {
    return (
      <div>
        <FormHelpExtra>你好世界</FormHelpExtra>
      </div>
    );
  }
}

ReactDOM.render(<App />, mountNode);
```