Form Checkbox Inputs

For cross browser consistency, <b-form-checkbox-group> and <b-form-checkbox> use Bootstrap's custom checkbox input to replace the browser default checkbox input. It is built on top of semantic and accessible markup, so it is a solid replacement for the default checkbox input.

Example 1: Single checkbox

<template>
  <div>
    <b-form-checkbox
      id="checkbox-1"
      v-model="status"
      name="checkbox-1"
      value="accepted"
      unchecked-value="not_accepted"
    >
      I accept the terms and use
    </b-form-checkbox>

    <div>State: <strong>{{ status }}</strong></div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        status: 'not_accepted'
      }
    }
  }
</script>

<!-- b-form-checkbox.vue -->

Example 2: Multiple choice checkboxes

<template>
  <div>
    <b-form-group label="Using options array:">
      <b-form-checkbox-group
        id="checkbox-group-1"
        v-model="selected"
        :options="options"
        name="flavour-1"
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Using sub-components:">
      <b-form-checkbox-group id="checkbox-group-2" v-model="selected" name="flavour-2">
        <b-form-checkbox value="orange">Orange</b-form-checkbox>
        <b-form-checkbox value="apple">Apple</b-form-checkbox>
        <b-form-checkbox value="pineapple">Pineapple</b-form-checkbox>
        <b-form-checkbox value="grape">Grape</b-form-checkbox>
      </b-form-checkbox-group>
    </b-form-group>

    <div>Selected: <strong>{{ selected }}</strong></div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [], // Must be an array reference!
        options: [
          { text: 'Orange', value: 'orange' },
          { text: 'Apple', value: 'apple' },
          { text: 'Pineapple', value: 'pineapple' },
          { text: 'Grape', value: 'grape' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkbox-multiple.vue -->

Feel free to mix and match options prop and <b-form-checkbox> in <b-form-checkbox-group>. Manually placed <b-form-checkbox> inputs will appear below any checkbox inputs generated by the options prop. To have them appear above the inputs generated by options, place them in the named slot first.

Checkbox group options array

options can be an array of strings or objects. Available fields:

value The selected value which will be set on v-model
disabled Disables item for selection
text Display text, or html Display basic inline html

value can be a string, number, or simple object. Avoid using complex types in values.

If both html and text are provided, html will take precedence. Only basic/native HTML is supported in the html field (components will not work). Note that not all browsers will render inline html (i.e. <i>, <strong>, etc) inside <option> elements of a <select>.

Be cautious of placing user supplied content in the html field, as it may make you vulnerable to XSS attacks, if you do not first sanitize the user supplied string.

const options = ['A', 'B', 'C', { text: 'D', value: { d: 1 }, disabled: true }, 'E', 'F']

If an array entry is a string, it will be used for both the generated value and text fields.

You can mix using strings and objects in the array.

Internally, BootstrapVue will convert the above array to the following array (the array of objects) format:

const options = [
  { text: 'A', value: 'A', disabled: false },
  { text: 'B', value: 'B', disabled: false },
  { text: 'C', value: 'C', disabled: false },
  { text: 'D', value: { d: 1 }, disabled: true },
  { text: 'E', value: 'E', disabled: false },
  { text: 'F', value: 'F', disabled: false }
]

Options as an array of objects

const options = [
  { text: 'Item 1', value: 'first' },
  { text: 'Item 2', value: 'second' },
  { html: '<b>Item</b> 3', value: 'third', disabled: true },
  { text: 'Item 4' },
  { text: 'Item 5', value: { foo: 'bar', baz: true } }
]

If value is missing, then text will be used as both the value and text fields. If you use the html property, you must supply a value property.

Internally, BootstrapVue will convert the above array to the following array (the array of objects) format:

const options = [
  { text: 'Item 1', value: 'first', disabled: false },
  { text: 'Item 2', value: 'second', disabled: false },
  { html: '<b>Item</b> 3', value: 'third', disabled: true },
  { text: 'Item 4', value: 'Item 4', disabled: false },
  { text: 'Item 5', value: 'E', disabled: false }
]

Changing the option field names

If you want to customize the field property names (for example using name field for display text) you can easily change them by setting the text-field, html-field, value-field, and disabled-field props to a string that contains the property name you would like to use:

<template>
  <div>
    <b-form-checkbox-group
      v-model="selected"
      :options="options"
      class="mb-3"
      value-field="item"
      text-field="name"
      disabled-field="notEnabled"
    ></b-form-checkbox-group>
    <div class="mt-3">Selected: <strong>{{ selected }}</strong></div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [],
        options: [
          { item: 'A', name: 'Option A' },
          { item: 'B', name: 'Option B' },
          { item: 'D', name: 'Option C', notEnabled: true },
          { item: { d: 1 }, name: 'Option D' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkbox-group-options-fields.vue -->

Inline and stacked checkboxes

<b-form-checkbox-group> components render inline checkboxes by default, while <b-form-checkbox> renders block-level (stacked) checkboxes.

Set the prop stacked on <b-form-checkbox-group> to place each form control one over the other, or if using individual checkboxes not inside a <b-form-checkbox-group>, set the inline prop on <b-form-checkbox>.

<template>
  <div>
    <b-form-group label="Form-checkbox-group inline checkboxes (default)">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        name="flavour-1a"
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Form-checkbox-group stacked checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        name="flavour-2a"
        stacked
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Individual stacked checkboxes (default)">
      <b-form-checkbox
        v-for="option in options"
        v-model="selected"
        :key="option.value"
        :value="option.value"
        name="flavour-3a"
      >
        {{ option.text }}
      </b-form-checkbox>
    </b-form-group>

    <b-form-group label="Individual inline checkboxes">
      <b-form-checkbox
        v-for="option in options"
        v-model="selected"
        :key="option.value"
        :value="option.value"
        name="flavour-4a"
        inline
      >
        {{ option.text }}
      </b-form-checkbox>
    </b-form-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [], // Must be an array reference!
        options: [
          { text: 'Orange', value: 'orange' },
          { text: 'Apple', value: 'apple' },
          { text: 'Pineapple', value: 'pineapple' },
          { text: 'Grape', value: 'grape' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkbox-stacked.vue -->

Control sizing

Use the size prop to control the size of the checkbox. The default size is medium. Supported size values are sm (small) and lg (large).

<div>
  <b-form-checkbox size="sm">Small</b-form-checkbox>
  <b-form-checkbox>Default</b-form-checkbox>
  <b-form-checkbox size="lg">Large</b-form-checkbox>
</div>

<!-- form-checkbox-sizes.vue -->

Sizes can be set on individual <b-form-checkbox> components, or inherited from the size setting of <b-form-checkbox-group>.

Note: Bootstrap v4.x does not natively support sizes for the custom checkbox control. However, BootstrapVue includes custom SCSS/CSS that adds support for sizing the custom checkboxes.

Checkbox values and `v-model`

By default, <b-form-checkbox> value will be true when checked and false when unchecked. You can customize the checked and unchecked values by specifying the value and unchecked-value properties, respectively.

The v-model binds to the checked prop. When you have multiple checkboxes that bind to a single data state variable, you must provide an array reference ([]) to your v-model. Do not use the checked prop directly.

Note that when v-model is bound to multiple checkboxes (i.e an array ref), the unchecked-value is not used. Only the value(s) of the checked checkboxes will be returned in the v-model bound array. You should provide a unique value for each checkbox's value prop (the default of true will not work when bound to an array)

To pre-check any radios, set the v-model to the value(s) of the checks that you would like pre-selected.

When placing individual <b-form-checkbox> components within a <b-form-checkbox-group>, most props and the v-model are inherited from the <b-form-checkbox-group>.

Note: the unchecked-value prop does not affect the native <input>'s value attribute, because browsers don't include unchecked boxes in form submissions. To guarantee that one of two values is submitted in a native <form> submit (e.g. 'yes' or 'no'), use radio inputs instead. This is the same limitation that Vue has with native checkbox inputs.

Multiple checkboxes and accessibility

When binding multiple checkboxes together, you must set the name prop to the same value for all <b-form-checkbox>s in the group individually or via the name prop of <b-form-checkbox-group>. This will inform users of assistive technologies that the checkboxes are related and enables native browser keyboard navigation.

Whenever using multiple checkboxes, it is recommended that the checkboxes be placed in a <b-form-group> component to associate a label with the entire group of checkboxes. See examples above.

Button style checkboxes

You can optionally render checkboxes to appear as buttons, either individually, or in a group.

Button style checkboxes will have the class .active automatically applied to the label when they are in the checked state.

Individual checkbox button style

A single checkbox can be rendered with a button appearance by setting the prop button to true

Change the button variant by setting the button-variant prop to one of the standard Bootstrap button variants (see <b-button> for supported variants). The default variant is secondary.

<template>
  <div>
    <b-form-checkbox v-model="checked1" name="check-button" button>
      Button Checkbox <b>(Checked: {{ checked1 }})</b>
    </b-form-checkbox>
    <b-form-checkbox v-model="checked2" name="check-button" button button-variant="info">
      Button Checkbox <b>(Checked: {{ checked2 }})</b>
    </b-form-checkbox>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        checked1: false,
        checked2: false
      }
    }
  }
</script>

<!-- b-form-checkbox-button.vue -->

The inline prop has no effect on individual button-style checkboxes.

Grouped button style checkboxes

Render groups of checkboxes with the look of a button-group by setting the prop buttons on <b-form-checkbox-group>. Change the button variant by setting the button-variant prop to one of the standard Bootstrap button variants (see <b-button> for supported variants). The default button-variant is secondary.

<template>
  <div>
    <b-form-group label="Button-group style checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        name="buttons-1"
        buttons
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Button-group style checkboxes with variant primary and large buttons">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        buttons
        button-variant="primary"
        size="lg"
        name="buttons-2"
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Stacked (vertical) button-group style checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        stacked
        buttons
      ></b-form-checkbox-group>
    </b-form-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [], // Must be an array reference!
        options: [
          { text: 'Orange', value: 'orange' },
          { text: 'Apple', value: 'apple' },
          { text: 'Pineapple', value: 'pineapple' },
          { text: 'Grape', value: 'grape' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkbox-button-group.vue -->

Switch style checkboxes

Switch styling is supported on <b-form-checkbox> and <b-form-checkbox-group> components.

Note: If the checkbox is in button mode, switch mode will have no effect.

Individual checkbox switch style

A single checkbox can be rendered with a switch appearance by setting the prop switch to true

<template>
  <div>
    <b-form-checkbox v-model="checked" name="check-button" switch>
      Switch Checkbox <b>(Checked: {{ checked }})</b>
    </b-form-checkbox>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        checked: false
      }
    }
  }
</script>

<!-- b-form-checkbox-switch.vue -->

Grouped switch style checkboxes

Render groups of checkboxes with the look of a switches by setting the prop switches on <b-form-checkbox-group>.

<template>
  <div>
    <b-form-group label="Inline switch style checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        switches
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Stacked (vertical) switch style checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        switches
        stacked
      ></b-form-checkbox-group>
    </b-form-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [], // Must be an array reference!
        options: [
          { text: 'Red', value: 'red' },
          { text: 'Green', value: 'green' },
          { text: 'Yellow (disabled)', value: 'yellow', disabled: true },
          { text: 'Blue', value: 'blue' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkboxes-switch-group.vue -->

Switch sizing

Use the size prop to control the size of the switch. The default size is medium. Supported size values are sm (small) and lg (large).

<div>
  <b-form-checkbox switch size="sm">Small</b-form-checkbox>
  <b-form-checkbox switch>Default</b-form-checkbox>
  <b-form-checkbox switch size="lg">Large</b-form-checkbox>
</div>

<!-- form-checkbox-switch-sizes.vue -->

Sizes can be set on individual <b-form-checkbox> components, or inherited from the size setting of <b-form-checkbox-group>.

Note: Bootstrap v4.x does not natively support sizes for the custom switch control. However, BootstrapVue includes custom SCSS/CSS that adds support for sizing the custom switches.

Non custom check inputs (plain)

You can have <b-form-checkbox-group> or <b-form-checkbox> render a browser native checkbox input by setting the plain prop.

<template>
  <div>
    <b-form-group label="Plain inline checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        plain
      ></b-form-checkbox-group>
    </b-form-group>

    <b-form-group label="Plain stacked checkboxes">
      <b-form-checkbox-group
        v-model="selected"
        :options="options"
        plain
        stacked
      ></b-form-checkbox-group>
    </b-form-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        selected: [], // Must be an array reference!
        options: [
          { text: 'Orange', value: 'orange' },
          { text: 'Apple', value: 'apple' },
          { text: 'Pineapple', value: 'pineapple' },
          { text: 'Grape', value: 'grape' }
        ]
      }
    }
  }
</script>

<!-- b-form-checkbox-plain.vue -->

Note: The plain prop has no effect when button or buttons is set.

Contextual states

Bootstrap includes validation styles for valid and invalid states on most form controls.

Generally speaking, you'll want to use a particular state for specific types of feedback:

false (denotes invalid state) is great for when there's a blocking or required field. A user must fill in this field properly to submit the form.
true (denotes valid state) is ideal for situations when you have per-field validation throughout a form and want to encourage a user through the rest of the fields.
null Displays no validation state (neither valid nor invalid)

To apply one of the contextual state icons on <b-form-checkbox>, set the state prop to false (for invalid), true (for valid), or null (no validation state).

Note: Contextual states are not supported when in button mode.

Contextual state and validation example

<template>
  <div>
    <b-form-checkbox-group
      v-model="value"
      :options="options"
      :state="state"
      name="checkbox-validation"
    >
      <b-form-invalid-feedback :state="state">Please select two</b-form-invalid-feedback>
      <b-form-valid-feedback :state="state">Thank you</b-form-valid-feedback>
    </b-form-checkbox-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        value: [],
        options: [
          { text: 'First Check', value: 'first' },
          { text: 'Second Check', value: 'second' },
          { text: 'Third Check', value: 'third' }
        ]
      }
    },
    computed: {
      state() {
        return this.value.length === 2
      }
    }
  }
</script>

<!-- form-checkbox-validation.vue -->

Required constraint

When using individual <b-form-checkbox> components (not in a <b-form-checkbox-group>), and you want the checkbox(es) to be required in your form, you must provide a name on each <b-form-checkbox> in order for the required constraint to work. All <b-form-checkbox> components tied to the same v-model must have the same name.

The name is required in order for Assistive Technologies (such as screen readers, and keyboard only users) to know which checkboxes belong to the same form variable (the name also automatically enables native browser keyboard navigation), hence required will only work if name is set. <b-form-checkbox-group> will automatically generate a unique input name if one is not provided on the group.

Autofocus

When the autofocus prop is set on <b-form-checkbox>, the input will be auto-focused when it is inserted (i.e. mounted) into the document, or re-activated when inside a Vue <keep-alive> component. Note that this prop does not set the autofocus attribute on the input, nor can it tell when the input becomes visible.

Indeterminate (tri-state) support

Normally a checkbox input can only have two states: checked or unchecked. They can have any value, but they either submit that value (checked) or don't (unchecked) with a form submission (although BootstrapVue allows a value for the unchecked state on a single checkbox)

Visually_, there are actually three states a checkbox can be in: _checked_, _unchecked_, or **_indeterminate**.

The indeterminate state is visual only. The checkbox is still either checked or unchecked as a value. That means the visual indeterminate state masks the real value of the checkbox, so that better make sense in your UI!

<b-form-checkbox> supports setting this visual indeterminate state via the indeterminate prop (defaults to false). Clicking the checkbox will clear its indeterminate state. The indeterminate prop can be synced to the checkbox's state by v-binding the indeterminate prop with the .sync modifier.

Note: indeterminate styling is not supported in button or switch mode, nor is it supported in <b-form-checkbox-group> (multiple checkboxes).

Single Indeterminate checkbox:

<template>
  <div>
    <b-form-checkbox v-model="checked" :indeterminate.sync="indeterminate">
      Click me to see what happens
    </b-form-checkbox>

    <div class="mt-3">
      Checked: <strong>{{ checked }}</strong><br>
      Indeterminate: <strong>{{ indeterminate }}</strong>
    </div>

    <b-button @click="toggleIndeterminate">Toggle Indeterminate State</b-button>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        checked: true,
        indeterminate: true
      }
    },
    methods: {
      toggleIndeterminate() {
        this.indeterminate = !this.indeterminate
      }
    }
  }
</script>

<!-- b-form-checkbox-indeterminate.vue -->

Indeterminate checkbox use-case example:

<template>
  <div>
    <b-form-group>
      <template v-slot:label>
        <b>Choose your flavours:</b><br>
        <b-form-checkbox
          v-model="allSelected"
          :indeterminate="indeterminate"
          aria-describedby="flavours"
          aria-controls="flavours"
          @change="toggleAll"
        >
          {{ allSelected ? 'Un-select All' : 'Select All' }}
        </b-form-checkbox>
      </template>

      <b-form-checkbox-group
        id="flavors"
        v-model="selected"
        :options="flavours"
        name="flavors"
        class="ml-4"
        aria-label="Individual flavours"
        stacked
      ></b-form-checkbox-group>
    </b-form-group>

    <div>
      Selected: <strong>{{ selected }}</strong><br>
      All Selected: <strong>{{ allSelected }}</strong><br>
      Indeterminate: <strong>{{ indeterminate }}</strong>
    </div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        flavours: ['Orange', 'Grape', 'Apple', 'Lime', 'Very Berry'],
        selected: [],
        allSelected: false,
        indeterminate: false
      }
    },
    methods: {
      toggleAll(checked) {
        this.selected = checked ? this.flavours.slice() : []
      }
    },
    watch: {
      selected(newVal, oldVal) {
        // Handle changes in individual flavour checkboxes
        if (newVal.length === 0) {
          this.indeterminate = false
          this.allSelected = false
        } else if (newVal.length === this.flavours.length) {
          this.indeterminate = false
          this.allSelected = true
        } else {
          this.indeterminate = true
          this.allSelected = false
        }
      }
    }
  }
</script>

<!-- b-form-checkbox-indeterminate-multiple.vue -->

Note: indeterminate is not supported in button mode, nor in multiple checkbox mode. Also pay attention that plain checkbox (i.e. with prop plain) also supports indeterminate state on Windows/Linux/Mac/Android, but not on iOS.

Indeterminate state and accessibility

Not all screen readers will convey the indeterminate state to screen reader users. So it is recommended to provide some form of textual feedback to the user (possibly by via the .sr-only class) if the indeterminate state has special contextual meaning in your application.

Component reference

`<b-form-checkbox-group>`

View source

<b-form-checkbox-group> Component aliases
<b-form-checkbox-group> Properties
<b-form-checkbox-group> v-model
<b-form-checkbox-group> Slots
<b-form-checkbox-group> Events

Component aliases

<b-form-checkbox-group> can also be used via the following aliases:

<b-checkbox-group>
<b-check-group>

Note: component aliases are only available when importing all of BootstrapVue or using the component group plugin.

Properties

Property (Click to sort Ascending)	Type	Default	Description
`id`	`String`		Used to set the 'id' attribute on the rendered content, and used as the base to generate any additional element IDs as needed
`name`	`String`		Sets the value of the 'name' attribute on the form control
`disabled`	`Boolean`		When set to 'true', disables the component's functionality and places it in a disabled state
`required`	`Boolean`	`false`	Adds the 'required' attribute to the form control
`form`	`String`		ID of the form that the form control belongs to. Sets the 'form' attribute on the control
`autofocus`	`Boolean`	`false`	When set to 'true', attempts to auto-focus the control when it is mounted, or re-activated when in a keep-alive. Does not set the 'autofocus' attribute on the control
`validated`	`Boolean`	`false`	When set, adds the Bootstrap class 'was-validated' to the group wrapper
`aria-invalid`	`Boolean` or `String`	`false`	Sets the 'aria-invalid' attribute value on the wrapper element. When not provided, the 'state' prop will control the attribute
`stacked`	`Boolean`	`false`	When set, renders the checkbox group in stacked mode
`plain`	`Boolean`	`false`	Render the form control in plain mode, rather than custom styled mode
`buttons`	`Boolean`	`false`	When set, renderes the checkboxes in this group with button styling
`button-variant`	`String`	`'secondary'`	Specifies the Bootstrap contextual color theme variant the apply to the button style checkboxes
`options`	`Array` or `Object`	`[]`	Array of items to render in the component
`value-field`	`String`	`'value'`	Field name in the 'options' array that should be used for the value
`text-field`	`String`	`'text'`	Field name in the 'options' array that should be used for the text label
`html-field`	`String`	`'html'`	Field name in the 'options' array that should be used for the html label instead of text field. Use with caution.
`disabled-field`	`String`	`'disabled'`	Field name in the 'options' array that should be used for the disabled state
`size` Settings	`String`		Set the size of the component's appearance. 'sm', 'md' (default), or 'lg'
`state`	`Boolean`	`null`	Controls the validation state appearance of the component. 'true' for valid, 'false' for invalid', or 'null' for no validation state
`switches`	`Boolean`	`false`	When set, renders the checkboxes in the group with switch styling
`checked` v-model	`Array`	`null`	The current value of the checked checkboxes in the group. Must be an array when there are multiple checkboxes

`v-model`

Property	Event
`checked`	`input`

Slots

Slot Name	Description
`first`	Slot to place b-form-checks so that they appear before checks generated from options prop

Events

Event	Arguments	Description
`input`	`checked` - Value of checkboxes. Value will be an array.	Emitted when the checked value is changed
`change`	`checked` - Value of checkboxes. Value will be an array.	Emitted when selected value(s) is changed due to user interaction

`<b-form-checkbox>`

View source

<b-form-checkbox> Component aliases
<b-form-checkbox> Properties
<b-form-checkbox> v-model
<b-form-checkbox> Events

Component aliases

<b-form-checkbox> can also be used via the following aliases:

<b-checkbox>
<b-check>

Note: component aliases are only available when importing all of BootstrapVue or using the component group plugin.

Properties

Property (Click to sort Ascending)	Type	Default	Description
`value`	`Any`	`true`	Value returned when this checkbox is checked
`checked` v-model	`Any`	`null`	The current value of the checkbox(es). Must be an array when there are multiple checkboxes bound to the same v-model
`inline`	`Boolean`	`false`	When set, renders the checkbox as an inline element rather than as a 100% width block
`plain`	`Boolean`	`false`	Render the form control in plain mode, rather than custom styled mode
`button`	`Boolean`	`false`	When set, renders the checkbox with the appearance of a button
`button-variant`	`String`		Applies on of Bootstrap's theme colors when in 'button' mode
`aria-label`	`String`		Sets the value of 'aria-label' attribute on the rendered element
`aria-labelledby`	`String`		The ID of the element that provides a label for this component. Used as the value for the 'aria-labelledby' attribute
`id`	`String`		Used to set the 'id' attribute on the rendered content, and used as the base to generate any additional element IDs as needed
`name`	`String`		Sets the value of the 'name' attribute on the form control
`disabled`	`Boolean`		When set to 'true', disables the component's functionality and places it in a disabled state
`required`	`Boolean`	`false`	Adds the 'required' attribute to the form control
`form`	`String`		ID of the form that the form control belongs to. Sets the 'form' attribute on the control
`autofocus`	`Boolean`	`false`	When set to 'true', attempts to auto-focus the control when it is mounted, or re-activated when in a keep-alive. Does not set the 'autofocus' attribute on the control
`size` Settings	`String`		Set the size of the component's appearance. 'sm', 'md' (default), or 'lg'
`state`	`Boolean`	`null`	Controls the validation state appearance of the component. 'true' for valid, 'false' for invalid', or 'null' for no validation state
`unchecked-value`	`Any`	`false`	Value returned when this checkbox is unchecked. Note not applicable when multiple checkboxes bound to the same v-model array
`indeterminate`	`Boolean`	`false`	Renders the checkbox in an indeterminate state. Syncable via the .sync modifier
`switch`	`Boolean`	`false`	When set, renders the checkbox with the appearance of a switch

`v-model`

Property	Event
`checked`	`input`

Events

Event	Arguments	Description
`input`	`checked` - Value of checkbox(es). When bound to multiple checkboxes, value will be an array.	Emitted when the selected value(s) is changed
`change`	`checked` - Value of checkbox(es). When bound to multiple checkboxes, value will be an array.	Emitted when selected value(s) is changed due to user interaction

Importing individual components

You can import individual components into your project via the following named exports:

Component	Named Export	Import Path
`<b-form-checkbox-group>`	`BFormCheckboxGroup`	`bootstrap-vue`
`<b-form-checkbox>`	`BFormCheckbox`	`bootstrap-vue`

Example:

import { BFormCheckboxGroup } from 'bootstrap-vue'
Vue.component('b-form-checkbox-group', BFormCheckboxGroup)

Importing as a Vue.js plugin

This plugin includes all of the above listed individual components. Plugins also include any component aliases.

Named Export	Import Path
`FormCheckboxPlugin`	`bootstrap-vue`

Example:

import { FormCheckboxPlugin } from 'bootstrap-vue'
Vue.use(FormCheckboxPlugin)

Checkbox group options array

Options as an array of objects

Changing the option field names

Inline and stacked checkboxes

Control sizing

Checkbox values and v-model

Multiple checkboxes and accessibility

Button style checkboxes

Individual checkbox button style

Grouped button style checkboxes

Switch style checkboxes

Individual checkbox switch style

Grouped switch style checkboxes

Switch sizing

Non custom check inputs (plain)

Contextual states

Contextual state and validation example

Required constraint

Autofocus

Indeterminate (tri-state) support

Indeterminate state and accessibility

Component reference

Component aliases

Properties

v-model

Slots

Events

Component aliases

Properties

v-model

Events

Importing individual components

Importing as a Vue.js plugin

Checkbox values and `v-model`

`v-model`

`v-model`