---
category: 2
iframe: 250
title: 顶部公告
title_en: Banner
---

页面顶部通告形式，默认有图标且`type` 为 'warning'。

````jsx
import { Alert } from 'parkball';

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