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---
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category: Components
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type: Feedback
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title: Alert
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cover: https://gw.alipayobjects.com/zos/alicdn/8emPa3fjl/Alert.svg
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---
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Alert component for feedback.
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## When To Use
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- When you need to show alert messages to users.
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- When you need a persistent static container which is closable by user actions.
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## API
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| afterClose | Called when close animation is finished | () => void | - |
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| banner | Whether to show as banner | boolean | false |
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| closable | Whether Alert can be closed | boolean | - |
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| closeText | Close text to show | ReactNode | - |
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| description | Additional content of Alert | ReactNode | - |
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| icon | Custom icon, effective when `showIcon` is true | ReactNode | - |
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| message | Content of Alert | ReactNode | - |
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| showIcon | Whether to show icon | boolean | false, in `banner` mode default is true |
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| type | Type of Alert styles, options: `success`, `info`, `warning`, `error` | string | `info`, in `banner` mode default is `warning` |
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| onClose | Callback when Alert is closed | (e: MouseEvent) => void | - |
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### Alert.ErrorBoundary
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| description | Custom error description to show | ReactNode | {{ error stack }} | |
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| message | Custom error message to show | ReactNode | {{ error }} | |
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