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79 lines
1.7 KiB
Markdown
79 lines
1.7 KiB
Markdown
---
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order: 12
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title:
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zh-CN: 使用 hooks 获得上下文
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en-US: Use hooks to get context
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---
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## zh-CN
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通过 `Modal.useModal` 创建支持读取 context 的 `contextHolder`。
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## en-US
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Use `Modal.useModal` to get `contextHolder` with context accessible issue.
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```jsx
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import { Modal, Button, Space } from 'antd';
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const ReachableContext = React.createContext();
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const UnreachableContext = React.createContext();
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const config = {
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title: 'Use Hook!',
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content: (
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<>
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<ReachableContext.Consumer>{name => `Reachable: ${name}!`}</ReachableContext.Consumer>
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<br />
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<UnreachableContext.Consumer>{name => `Unreachable: ${name}!`}</UnreachableContext.Consumer>
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</>
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),
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};
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const App = () => {
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const [modal, contextHolder] = Modal.useModal();
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return (
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<ReachableContext.Provider value="Light">
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<Space>
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<Button
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onClick={() => {
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modal.confirm(config);
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}}
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>
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Confirm
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</Button>
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<Button
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onClick={() => {
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modal.warning(config);
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}}
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>
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Warning
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</Button>
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<Button
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onClick={() => {
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modal.info(config);
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}}
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>
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Info
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</Button>
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<Button
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onClick={() => {
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modal.error(config);
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}}
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>
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Error
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</Button>
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</Space>
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{/* `contextHolder` should always under the context you want to access */}
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{contextHolder}
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{/* Can not access this context since `contextHolder` is not in it */}
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<UnreachableContext.Provider value="Bamboo" />
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</ReachableContext.Provider>
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);
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};
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ReactDOM.render(<App />, mountNode);
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```
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