element-plus/docs/en-US/component/checkbox.md
jeremywu c6bed151a5
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Co-authored-by: 0song <0song@gmail.com>
2021-09-17 00:18:50 +08:00

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Markdown

# Checkbox
A group of options for multiple choices.
## Basic usage
Checkbox can be used alone to switch between two states.
:::demo Define `v-model`(bind variable) in `el-checkbox`. The default value is a `Boolean` for single `checkbox`, and it becomes `true` when selected. Content inside the `el-checkbox` tag will become the description following the button of the checkbox.
checkbox/basic
:::
## Disabled State
Disabled state for checkbox.
:::demo Set the `disabled` attribute.
checkbox/disabled
:::
## Checkbox group
It is used for multiple checkboxes which are bound in one group, and indicates whether one option is selected by checking if it is checked.
:::demo `checkbox-group` element can manage multiple checkboxes in one group by using `v-model` which is bound as an `Array`. Inside the `el-checkbox` element, `label` is the value of the checkbox. If no content is nested in that tag, `label` will be rendered as the description following the button of the checkbox. `label` also corresponds with the element values in the array. It is selected if the specified value exists in the array, and vice versa.
checkbox/grouping
:::
## Indeterminate
The `indeterminate` property can help you to achieve a 'check all' effect.
:::demo
checkbox/intermediate
:::
## Minimum / Maximum items checked
The `min` and `max` properties can help you to limit the number of checked items.
:::demo
checkbox/limitation
:::
## Button style
Checkbox with button styles.
:::demo You just need to change `el-checkbox` element into `el-checkbox-button` element. We also provide `size` attribute.
checkbox/button-style
:::
## With borders
:::demo The `border` attribute adds a border to Checkboxes.
checkbox/with-border
:::
## Checkbox Attributes
| Attribute | Description | Type | Accepted Values | Default |
| --------------------- | --------------------------------------------------------- | ---------------------------------- | --------------------- | ------- |
| model-value / v-model | binding value | string / number / boolean | — | — |
| label | value of the Checkbox when used inside a `checkbox-group` | string / number / boolean / object | — | — |
| true-label | value of the Checkbox if it's checked | string / number | — | — |
| false-label | value of the Checkbox if it's not checked | string / number | — | — |
| disabled | whether the Checkbox is disabled | boolean | — | false |
| border | whether to add a border around Checkbox | boolean | — | false |
| size | size of the Checkbox | string | medium / small / mini | — |
| name | native 'name' attribute | string | — | — |
| checked | if the Checkbox is checked | boolean | — | false |
| indeterminate | same as `indeterminate` in native checkbox | boolean | — | false |
## Checkbox Events
| Event Name | Description | Parameters |
| ---------- | --------------------------------------- | ----------------- |
| change | triggers when the binding value changes | the updated value |
## Checkbox-group Attributes
| Attribute | Description | Type | Accepted Values | Default |
| --------------------- | ------------------------------------------------- | ------- | --------------------- | ------- |
| model-value / v-model | binding value | array | — | — |
| size | size of checkbox | string | medium / small / mini | — |
| disabled | whether the nesting checkboxes are disabled | boolean | — | false |
| min | minimum number of checkbox checked | number | — | — |
| max | maximum number of checkbox checked | number | — | — |
| text-color | font color when button is active | string | — | #ffffff |
| fill | border and background color when button is active | string | — | #409EFF |
## Checkbox-group Events
| Event Name | Description | Parameters |
| ---------- | --------------------------------------- | ----------------- |
| change | triggers when the binding value changes | the updated value |
## Checkbox-button Attributes
| Attribute | Description | Type | Accepted Values | Default |
| ----------- | --------------------------------------------------------- | ---------------------------------- | --------------- | ------- |
| label | value of the checkbox when used inside a `checkbox-group` | string / number / boolean / object | — | — |
| true-label | value of the checkbox if it's checked | string / number | — | — |
| false-label | value of the checkbox if it's not checked | string / number | — | — |
| disabled | whether the checkbox is disabled | boolean | — | false |
| name | native 'name' attribute | string | — | — |
| checked | if the checkbox is checked | boolean | — | false |