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124 lines
4.5 KiB
Markdown
124 lines
4.5 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: Message
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cover: https://gw.alipayobjects.com/zos/alicdn/hAkKTIW0K/Message.svg
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---
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Display global messages as feedback in response to user operations.
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## When To Use
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- To provide feedback such as success, warning, error etc.
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- A message is displayed at top and center and will be dismissed automatically, as a non-interrupting light-weighted prompt.
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## API
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This components provides some static methods, with usage and arguments as following:
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- `message.success(content, [duration], onClose)`
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- `message.error(content, [duration], onClose)`
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- `message.info(content, [duration], onClose)`
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- `message.warning(content, [duration], onClose)`
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- `message.warn(content, [duration], onClose)` // alias of warning
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- `message.loading(content, [duration], onClose)`
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| Argument | Description | Type | Default |
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| --- | --- | --- | --- |
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| content | The content of the message | ReactNode \| config | - |
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| duration | Time(seconds) before auto-dismiss, don't dismiss if set to 0 | number | 1.5 |
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| onClose | Specify a function that will be called when the message is closed | function | - |
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`afterClose` can be called in thenable interface:
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- `message[level](content, [duration]).then(afterClose)`
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- `message[level](content, [duration], onClose).then(afterClose)`
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where `level` refers one static methods of `message`. The result of `then` method will be a Promise.
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Supports passing parameters wrapped in an object:
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- `message.open(config)`
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- `message.success(config)`
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- `message.error(config)`
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- `message.info(config)`
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- `message.warning(config)`
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- `message.warn(config)` // alias of warning
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- `message.loading(config)`
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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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| className | Customized CSS class | string | - |
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| content | The content of the message | ReactNode | - |
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| duration | Time(seconds) before auto-dismiss, don't dismiss if set to 0 | number | 3 |
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| icon | Customized Icon | ReactNode | - |
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| key | The unique identifier of the Message | string \| number | - |
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| style | Customized inline style | [CSSProperties](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/e434515761b36830c3e58a970abf5186f005adac/types/react/index.d.ts#L794) | - |
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| onClick | Specify a function that will be called when the message is clicked | function | - |
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| onClose | Specify a function that will be called when the message is closed | function | - |
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### Global static methods
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Methods for global configuration and destruction are also provided:
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- `message.config(options)`
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- `message.destroy()`
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> use `message.destroy(key)` to remove a message。
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#### message.config
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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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message.config({
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top: 100,
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duration: 2,
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maxCount: 3,
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rtl: true,
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prefixCls: 'my-message',
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});
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```
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| Argument | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| duration | Time before auto-dismiss, in seconds | number | 3 | |
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| getContainer | Return the mount node for Message | () => HTMLElement | () => document.body | |
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| maxCount | Max message show, drop oldest if exceed limit | number | - | |
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| prefixCls | The prefix className of message node | string | `ant-message` | 4.5.0 |
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| rtl | Whether to enable RTL mode | boolean | false | |
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| top | Distance from top | number | 8 | |
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## FAQ
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### Why I can not access context, redux, ConfigProvider `locale/prefixCls` in message?
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antd will dynamic create React instance by `ReactDOM.render` when call message 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 `message.useMessage` 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] = message.useMessage();
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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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### How to set static methods prefixCls ？
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You can config with [`ConfigProvider.config`](/components/config-provider/#ConfigProvider.config()-4.13.0+)
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