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100 lines
4.6 KiB
Markdown
100 lines
4.6 KiB
Markdown
---
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category: Components
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type: Feedback
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noinstant: true
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title: Notification
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cover: https://gw.alipayobjects.com/zos/alicdn/Jxm5nw61w/Notification.svg
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---
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Display a notification message globally.
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## When To Use
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To display a notification message at any of the four corners of the viewport. Typically it can be used in the following cases:
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- A notification with complex content.
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- A notification providing a feedback based on the user interaction. Or it may show some details about upcoming steps the user may have to follow.
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- A notification that is pushed by the application.
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## API
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- `notification.success(config)`
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- `notification.error(config)`
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- `notification.info(config)`
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- `notification.warning(config)`
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- `notification.warn(config)`
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- `notification.open(config)`
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- `notification.close(key: String)`
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- `notification.destroy()`
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The properties of config are as follows:
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| bottom | Distance from the bottom of the viewport, when `placement` is `bottomRight` or `bottomLeft` (unit: pixels). | number | 24 |
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| btn | Customized close button | ReactNode | - |
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| className | Customized CSS class | string | - |
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| description | The content of notification box (required) | string\|ReactNode | - |
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| duration | Time in seconds before Notification is closed. When set to 0 or null, it will never be closed automatically | number | 4.5 |
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| getContainer | Return the mount node for Notification | () => HTMLNode | () => document.body |
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| icon | Customized icon | ReactNode | - |
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| closeIcon | custom close icon | ReactNode | - |
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| key | The unique identifier of the Notification | string | - |
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| message | The title of notification box (required) | string\|ReactNode | - |
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| onClose | Trigger when notification closed | Function | - |
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| onClick | Specify a function that will be called when the notification is clicked | Function | - |
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| placement | Position of Notification, can be one of `topLeft` `topRight` `bottomLeft` `bottomRight` | string | `topRight` |
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| style | Customized inline style | [React.CSSProperties](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/e434515761b36830c3e58a970abf5186f005adac/types/react/index.d.ts#L794) | - |
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| top | Distance from the top of the viewport, when `placement` is `topRight` or `topLeft` (unit: pixels). | number | 24 |
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`notification` also provides a global `config()` method that can be used for specifying the default options. Once this method is used, all the notification boxes will take into account these globally defined options when displaying.
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- `notification.config(options)`
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> When you use `ConfigProvider` for global configuration, the system will automatically start RTL mode by default.(4.3.0+)
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>
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> When you want to use it alone, you can start the RTL mode through the following settings.
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```js
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notification.config({
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placement: 'bottomRight',
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bottom: 50,
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duration: 3,
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rtl: true,
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});
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```
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| bottom | Distance from the bottom of the viewport, when `placement` is `bottomRight` or `bottomLeft` (unit: pixels). | number | 24 |
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| closeIcon | custom close icon | ReactNode | - |
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| duration | Time in seconds before Notification is closed. When set to 0 or null, it will never be closed automatically | number | 4.5 |
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| getContainer | Return the mount node for Notification | () => HTMLNode | () => document.body |
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| placement | Position of Notification, can be one of `topLeft` `topRight` `bottomLeft` `bottomRight` | string | `topRight` |
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| top | Distance from the top of the viewport, when `placement` is `topRight` or `topLeft` (unit: pixels). | number | 24 |
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| rtl | whether to enable RTL mode | boolean | false |
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## FAQ
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### Why I can not access context, redux in notification?
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antd will dynamic create React instance by `ReactDOM.render` when call notification methods. Whose context is different with origin code located context.
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When you need context info (like ConfigProvider context), you can use `notification.useNotification` to get `api` instance and `contextHolder` node. And put it in your children:
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```tsx
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const [api, contextHolder] = notification.useNotification();
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return (
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<Context1.Provider value="Ant">
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{/* contextHolder is inside Context1 which means api will get value of Context1 */}
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{contextHolder}
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<Context2.Provider value="Design">
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{/* contextHolder is outside Context2 which means api will **not** get value of Context2 */}
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</Context2.Provider>
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</Context1.Provider>
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);
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```
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**Note:** You must insert `contextHolder` into your children with hooks. You can use origin method if you do not need context connection.
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