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47 lines
1.2 KiB
Markdown
47 lines
1.2 KiB
Markdown
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---
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category: Components
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title: Util
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subtitle: 工具类
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cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*rRDlT7ST8DUAAAAAAAAAAAAADrJ8AQ/original
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coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*rRDlT7ST8DUAAAAAAAAAAAAADrJ8AQ/original
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demo:
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cols: 2
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group:
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title: 其他
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order: 99
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---
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工具类用于辅助开发，提供一些常用的工具方法。
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## GetRef
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获取组件的 `ref` 属性定义，这对于未直接暴露或者子组件的 `ref` 属性定义非常有用。
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```tsx
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import type { GetRef, Select } from 'antd';
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type SelectRefType = GetRef<typeof Select>; // BaseSelectRef
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```
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## GetProps
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获取组件的 `props` 属性定义：
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```tsx
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import type { Checkbox, GetProps } from 'antd';
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type CheckboxGroupType = GetProps<typeof Checkbox.Group>;
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```
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## GetProp
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获取组件的单个 `props` 属性定义。它已经将 `NonNullable` 进行了封装，所以不用在考虑为空的情况：
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```tsx
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import type { GetProp, Select, SelectProps } from 'antd';
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// 以下两种都可以生效
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type SelectOptionType1 = GetProp<SelectProps, 'options'>[number];
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type SelectOptionType2 = GetProp<typeof Select, 'options'>[number];
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```
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