2020-07-28 10:03:53 +08:00
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---
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title: Checkbox 勾选框
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2021-01-04 20:10:08 +08:00
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description:
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2020-07-28 10:03:53 +08:00
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type: 0
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group: null
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menuName: Checkbox
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2021-01-04 20:10:08 +08:00
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icon:
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2020-07-28 10:03:53 +08:00
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order: 8
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---
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2021-01-04 20:10:08 +08:00
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用于实现勾选,功能和 [Switch](./switch) 类似,只是展现上不同。
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2020-07-28 10:03:53 +08:00
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## 基本用法
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2021-01-07 23:35:03 +08:00
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```schema: scope="body"
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2020-07-28 10:03:53 +08:00
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{
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"type": "form",
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2021-06-07 10:09:55 +08:00
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"body": [
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2020-07-28 10:03:53 +08:00
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{
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"name": "checkbox",
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"type": "checkbox",
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"label": "勾选框",
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"option": "选项说明"
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}
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]
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}
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```
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## 配置真假值
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默认情况:
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2021-01-04 20:10:08 +08:00
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2020-07-28 10:03:53 +08:00
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- 勾选框勾选时,表单项值为:true
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- 勾选框取消勾选时,表单项值为:false
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2021-01-07 23:35:03 +08:00
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```schema: scope="body"
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2020-07-28 10:03:53 +08:00
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{
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"type": "form",
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"debug": true,
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2021-06-07 10:09:55 +08:00
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"body": [
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2020-07-28 10:03:53 +08:00
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{
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"name": "checkbox",
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"type": "checkbox",
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"label": "勾选框"
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}
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]
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}
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```
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如果你想调整这个值,可以配置`trueValue`和`falseValue`
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2021-01-07 23:35:03 +08:00
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```schema: scope="body"
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2020-07-28 10:03:53 +08:00
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{
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"type": "form",
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"debug": true,
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2021-06-07 10:09:55 +08:00
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"body": [
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2020-07-28 10:03:53 +08:00
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{
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"name": "checkbox",
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"type": "checkbox",
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"label": "勾选框",
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"trueValue": 1,
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"falseValue": 0
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}
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]
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}
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```
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勾选上例中的勾选框,观察数据域变化,会发现勾选后值为`1`,而取消勾选后为`0`
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2022-03-06 21:49:08 +08:00
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## 按钮模式
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2022-04-26 21:12:00 +08:00
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2022-03-06 21:49:08 +08:00
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```schema: scope="body"
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{
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"type": "form",
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"debug": true,
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"body": [
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{
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"name": "checkbox",
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"type": "checkbox",
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"label": "勾选框",
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"trueValue": true,
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"falseValue": false,
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"optionType": "button",
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2022-04-26 21:12:00 +08:00
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"option": "选项说明",
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2022-05-10 23:35:56 +08:00
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"value": true
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2022-03-06 21:49:08 +08:00
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}
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]
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}
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```
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2022-04-26 21:12:00 +08:00
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2020-07-28 10:03:53 +08:00
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## 属性表
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除了支持 [普通表单项属性表](./formitem#%E5%B1%9E%E6%80%A7%E8%A1%A8) 中的配置以外,还支持下面一些配置
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2022-04-26 21:12:00 +08:00
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| 属性名 | 类型 | 默认值 | 说明 |
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| ---------- | ------------------------- | --------- | ---------------- |
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| option | `string` | | 选项说明 |
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| trueValue | `string|number|boolean` | `true` | 标识真值 |
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| falseValue | `string|number|boolean` | `false` | 标识假值 |
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| optionType | `default|button` | `default` | 设置 option 类型 |
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2022-03-16 10:12:21 +08:00
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## 事件表
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2022-05-31 15:05:54 +08:00
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当前组件会对外派发以下事件,可以通过`onEvent`来监听这些事件,并通过`actions`来配置执行的动作,在`actions`中可以通过`event.data.xxx`事件参数变量来获取事件产生的数据,详细请查看[事件动作](../../docs/concepts/event-action)。
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| 事件名称 | 事件参数 | 说明 |
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| -------- | ------------------------------------ | ------------------ |
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| change | `event.data.value: boolean` 选中状态 | 选中状态变化时触发 |
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2022-03-16 10:12:21 +08:00
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## 动作表
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2022-05-31 15:05:54 +08:00
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当前组件对外暴露以下特性动作,其他组件可以通过指定`actionType: 动作名称`、`componentId: 该组件id`来触发这些动作,动作配置可以通过`args: {动作配置项名称: xxx}`来配置具体的参数,详细请查看[事件动作](../../docs/concepts/event-action#触发其他组件的动作)。
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| 动作名称 | 动作配置 | 说明 |
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| -------- | ------------------------------------------- | ------------------------------------------------------ |
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| clear | - | 清空 |
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| reset | - | 将值重置为`resetValue`,若没有配置`resetValue`,则清空 |
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| setValue | `value: string \|number \|boolean` 更新的值 | 更新数据 |
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