2016-03-31 14:17:09 +08:00
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---
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category: Components
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2022-11-09 12:28:04 +08:00
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group: 数据录入
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2016-09-21 11:28:38 +08:00
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title: Switch
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2024-03-22 14:22:42 +08:00
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subtitle: 开关
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description: 使用开关切换两种状态之间。
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2022-11-30 20:14:41 +08:00
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cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*rtArRpBNDZcAAAAAAAAAAAAADrJ8AQ/original
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2023-02-09 22:17:31 +08:00
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coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*al07RK8SGf4AAAAAAAAAAAAADrJ8AQ/original
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2022-11-09 12:28:04 +08:00
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demo:
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cols: 2
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2016-03-31 14:17:09 +08:00
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---
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2015-06-25 19:55:15 +08:00
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2015-06-26 14:42:30 +08:00
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## 何时使用
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2015-06-25 19:55:15 +08:00
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2015-06-26 14:42:30 +08:00
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- 需要表示开关状态/两种状态之间的切换时；
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2020-11-08 15:04:02 +08:00
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- 和 `checkbox` 的区别是，切换 `switch` 会直接触发状态改变，而 `checkbox` 一般用于状态标记，需要和提交操作配合。
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2015-07-08 19:47:45 +08:00
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2022-11-09 12:28:04 +08:00
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## 代码演示
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2022-11-17 17:31:26 +08:00
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<!-- prettier-ignore -->
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2022-11-09 12:28:04 +08:00
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<code src="./demo/basic.tsx">基本</code>
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<code src="./demo/disabled.tsx">不可用</code>
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<code src="./demo/text.tsx">文字和图标</code>
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<code src="./demo/size.tsx">两种大小</code>
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<code src="./demo/loading.tsx">加载中</code>
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2023-08-16 19:17:12 +08:00
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<code src="./demo/component-token.tsx" debug>自定义组件 Token</code>
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2022-11-09 12:28:04 +08:00
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2015-07-08 19:47:45 +08:00
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## API
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2023-08-08 18:27:48 +08:00
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通用属性参考：[通用属性](/docs/react/common-props)
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2023-11-09 13:42:25 +08:00
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| 参数 | 说明 | 类型 | 默认值 | 版本 |
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| --- | --- | --- | --- | --- |
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| autoFocus | 组件自动获取焦点 | boolean | false | |
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| checked | 指定当前是否选中 | boolean | false | |
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| checkedChildren | 选中时的内容 | ReactNode | - | |
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| className | Switch 器类名 | string | - | |
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| defaultChecked | 初始是否选中 | boolean | false | |
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| defaultValue | `defaultChecked` 的别名 | boolean | - | 5.12.0 |
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| disabled | 是否禁用 | boolean | false | |
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| loading | 加载中的开关 | boolean | false | |
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| size | 开关大小，可选值：`default` `small` | string | `default` | |
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| unCheckedChildren | 非选中时的内容 | ReactNode | - | |
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| value | `checked` 的别名 | boolean | - | 5.12.0 |
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| onChange | 变化时的回调函数 | function(checked: boolean, event: Event) | - | |
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| onClick | 点击时的回调函数 | function(checked: boolean, event: Event) | - | |
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2017-12-01 19:28:41 +08:00
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## 方法
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2022-11-13 14:07:22 +08:00
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| 名称 | 描述 |
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| ------- | -------- |
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| blur() | 移除焦点 |
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2019-11-22 14:37:39 +08:00
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| focus() | 获取焦点 |
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2023-04-11 10:25:24 +08:00
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2023-08-30 23:02:35 +08:00
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## 主题变量（Design Token）
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2023-04-11 10:25:24 +08:00
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<ComponentTokenTable component="Switch"></ComponentTokenTable>
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2023-09-04 14:10:39 +08:00
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## FAQ
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### 为什么在 Form.Item 下不能绑定数据？
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Form.Item 默认绑定值属性到 `value` 上，而 Switch 的值属性为 `checked`。你可以通过 `valuePropName` 来修改绑定的值属性。
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```tsx | pure
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<Form.Item name="fieldA" valuePropName="checked">
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<Switch />
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</Form.Item>
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```
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