ant-design/components/alert/demo/banner.md

---
order: 6
iframe: 250
title:
  zh-CN: 顶部公告
  en-US: Banner
---

## zh-CN

页面顶部通告形式，默认有图标且 `type` 为 'warning'。

## en-US

Display Alert as a banner at top of page.

```tsx
import { Alert } from 'antd';

ReactDOM.render(
  <>
    <Alert message="Warning text" banner />
    <br />
    <Alert
      message="Very long warning text warning text text text text text text text"
      banner
      closable
    />
    <br />
    <Alert showIcon={false} message="Warning text without icon" banner />
    <br />
    <Alert type="error" message="Error text" banner />
  </>,
  mountNode,
);
```