In progress

Checkbox

A Checkbox lets users select one or more options from a limited set, while a Checkbox Group combines related checkboxes under a shared label with optional helper text and validation.

Select colors

RedGreenBlueYellow

Code example

import { Checkbox, CheckboxGroup } from '@yleisradio/yds-components-react';

<CheckboxGroup
  id="colors"
  name="colors"
  label="Select colors"
  selectedValue={["red", "blue"]}
  onValueChange={() => {}}
>
  <Checkbox value="red" label="Red" name="colors" />
  <Checkbox value="green" label="Green" name="colors" />
  <Checkbox value="blue" label="Blue" name="colors" />
  <Checkbox value="yellow" label="Yellow" name="colors" />
</CheckboxGroup>

Why to use

Checkboxes enable independent, multi-select decisions in forms and filters. A Checkbox Group clarifies context with a shared label, optional description, and unified validation, while each Checkbox represents a separate, non-exclusive choice.

When to use

Use a Checkbox when users can select zero, one, or many independent options. Use a CheckboxGroup when related checkboxes should share a single label, description, or validation.

Use when multiple options can be selected at the same time (including none).
Use for filters, preferences, permissions, and multi-select form inputs.
Use a CheckboxGroup when options belong to the same question and should be validated together.

Don’t

Don’t use for a single required choice — use Radio instead.
Don’t use for an instant on/off UI state — use Switch instead.
Don’t use when selecting one option should automatically deselect others — use RadioGroup.

Content Guidelines

Checkbox labels should be short, scannable, and easy to compare. Use the group label to describe what the options have in common, and the group description for any necessary context.

Use a clear group label that describes the shared purpose of the options.
Keep option labels short and specific (e.g., “Evästeasetukset”).
Keep option wording parallel so choices are easy to compare.
Put instructions and clarifications in the group description, not inside each option label.

Don’t

Don’t use long sentences as option labels — move detail into the description.
Don’t create overlapping or ambiguous options.
Don’t repeat the group label in each option.
Don’t mix unrelated options in the same CheckboxGroup.

Anatomy

Checkbox anatomy

Group label – Describes the set of related options.
Description – Optional helper text below the label.
Checkbox control – Square selector; multiple can be checked.
Option label – Text linked to each checkbox option.

Key Checkbox Props

Use the following props to customize the Checkbox component to fit your needs.

variant

Value	Example	Description
`primary`	Primary	Default style for most use cases.
`secondary`	Secondary	Uses highlight color for the control.

Code example

<Checkbox name="demo" value="primary" label="Primary" variant="primary" defaultChecked />
<Checkbox name="demo" value="secondary" label="Secondary" variant="secondary" defaultChecked />

isDisabled

Non-interactive, dimmed styling.

Type	Example	Description
`boolean`	Disabled	Temporarily prevents user interaction.

Code example

<Checkbox name="demo" value="x" label="Disabled" isDisabled />

hideLabel

Type	Example	Description
`boolean`	Hidden label	Visually hides label but keeps it accessible.

Code example

<Checkbox name="demo" value="hidden" label="Hidden label" hideLabel />

controlAlign

Value	Example	Description
`start`	Start aligned	Positions the control before the label text.
`end`	End aligned	Positions the control after the label text.

Code example

<Checkbox name="align" value="start" label="Start aligned" controlAlign="start" />
<Checkbox name="align" value="end" label="End aligned" controlAlign="end" />

error

Applies error styling to the individual checkbox.

Type	Example	Description
`boolean`	Error	Marks checkbox with error styling.

Code example

<Checkbox name="demo" value="err" label="Error" error />

checked / defaultChecked

Standard HTML checked control for controlled or uncontrolled usage.

Prop	Example	Description
`defaultChecked`	Uncontrolled default	Sets initial checked state.
`checked`	Controlled	Controlled state—must provide onChange handler.

Code example

// Uncontrolled
<Checkbox name="demo" value="one" label="Uncontrolled default" defaultChecked />

// Controlled
const [isChecked, setChecked] = useState(true);
<Checkbox
  name="demo"
  value="two"
  label="Controlled"
  checked={isChecked}
  onChange={(e) => setChecked(e.currentTarget.checked)}
/>

Key CheckboxGroup Props

Use the following props to customize the CheckboxGroup component to fit your needs.

label

Type	Example	Description
`string`	Fruits ApplePear	Text label describing the purpose of the group.

Code example

<CheckboxGroup id="fruits" name="fruits" label="Fruits" selectedValue={[]} onValueChange={() => {}}>
  <Checkbox value="apple" label="Apple" name="fruits" />
  <Checkbox value="pear" label="Pear" name="fruits" />
</CheckboxGroup>

description

Helper guidance placed below group label.

Type	Example	Description
`string`	Fruits Select any that apply ApplePear	Provides additional context or instructions for the group.

Code example

<CheckboxGroup
  id="fruits"
  name="fruits"
  label="Fruits"
  description="Select any that apply"
  selectedValue={[]}
  onValueChange={() => {}}
>
  <Checkbox value="apple" label="Apple" name="fruits" />
  <Checkbox value="pear" label="Pear" name="fruits" />
</CheckboxGroup>

selectedValue

Array of currently selected checkbox values (controlled state).

Type	Example	Description
`string[]`	RedGreen	Controlled selection values.

Code example

<CheckboxGroup
  id="colors2"
  name="colors2"
  label="Colours"
  selectedValue={['green']}
  onValueChange={(next) => {}}
>
  <Checkbox value="red" label="Red" name="colors2" />
  <Checkbox value="green" label="Green" name="colors2" />
  <Checkbox value="blue" label="Blue" name="colors2" />
</CheckboxGroup>

errorMessage

Type	Example	Description
`string`	Fruits ApplePear Select at least one	Shows an error message and applies error styles to the group.

Code example

<CheckboxGroup
  id="fruits"
  name="fruits"
  label="Fruits"
  errorMessage="Select at least one"
  selectedValue={[]}
  onValueChange={() => {}}
>
  <Checkbox value="apple" label="Apple" name="fruits" />
  <Checkbox value="pear" label="Pear" name="fruits" />
</CheckboxGroup>

labelOptions

Pass-through props to underlying FormGroupLabel (e.g., optionalLabel, isHidden).

Type	Example	Description
`FormGroupLabelProps`	Vegetables (Optional) ApplePear	Customizes group label display.

Code example

<CheckboxGroup
  id="fruits"
  name="fruits"
  label="Fruits"
  labelOptions={{ optionalLabel: '(Optional)' }}
  selectedValue={[]}
  onValueChange={() => {}}
>
  <Checkbox value="apple" label="Apple" name="fruits" />
  <Checkbox value="pear" label="Pear" name="fruits" />
</CheckboxGroup>

Behavior

Each checkbox is independent; multiple can be selected or none.
Use a Checkbox Group to bind related options under one label/description and to show a single error message.
Indeterminate visually represents a partial/unknown selection for parent items (not submitted as a value).
Avoid immediate side effects on check/uncheck; apply changes on submit (use Switch for instant toggles).
Disabled items remain visible but non-interactive.

Accessibility

Every Checkbox needs a visible label or accessible name.
(WCAG 3.3.2 — Labels or Instructions)
Group related checkboxes under a group label that describes the overall purpose.
(WCAG 1.3.1 — Info and Relationships)
Keyboard: Tab/Shift+Tab move focus; Space toggles the focused checkbox.
(WCAG 2.1.1 — Keyboard)
Link helper or error text with aria-describedby; announce errors programmatically.
(WCAG 4.1.3 — Status Messages).

Implementation examples

With description

Code example

<CheckboxGroup
  id="learning"
  name="learning"
  label="Preferred learning methods"
  description="Select any methods that help you study effectively"
  selectedValue={["online", "group"]}
  onValueChange={() => {}}
>
  <Checkbox value="online" label="Online self-paced" name="learning" />
  <Checkbox value="classroom" label="Classroom" name="learning" />
  <Checkbox value="hybrid" label="Hybrid" name="learning" />
  <Checkbox value="group" label="Group discussions" name="learning" />
  <Checkbox value="independent" label="Independent study" name="learning" />
</CheckboxGroup>

With error message

Preferred learning methods

Select any methods that help you study effectively

Please select at least one method

Code example

<CheckboxGroup
  id="learning-error"
  name="learning-error"
  label="Preferred learning methods"
  description="Select any methods that help you study effectively"
  errorMessage="Please select at least one method"
  selectedValue={[]}
  onValueChange={() => {}}
>
  <Checkbox value="online" label="Online self-paced" name="learning-error" />
  <Checkbox value="classroom" label="Classroom" name="learning-error" />
  <Checkbox value="hybrid" label="Hybrid" name="learning-error" />
  <Checkbox value="group" label="Group discussions" name="learning-error" />
  <Checkbox value="independent" label="Independent study" name="learning-error" />
</CheckboxGroup>

Indeterminate state

Indeterminate state indicates a partial selection (e.g., parent with some children selected). It does not submit a value—purely visual and must be set via ref. Rarely used.

Intedeterminate state

Select allChild AChild BChild C

Code example

import { useEffect, useRef, useState } from 'react';
import { Checkbox, CheckboxGroup } from '@yleisradio/yds-components-react';

export const IndeterminateCheckbox = () => {
  const ref = useRef<HTMLInputElement | null>(null);
  const [childValues, setChildValues] = useState<string[]>(['a']);

  const allValues = ['a', 'b', 'c'];
  const isAll = childValues.length === allValues.length;
  const isNone = childValues.length === 0;

  useEffect(() => {
    if (ref.current) {
      ref.current.indeterminate = !isAll && !isNone;
    }
  }, [isAll, isNone]);

  return (
    <CheckboxGroup
      id="indeterminate-state"
      name="indeterminate-state"
      label="Intedeterminate state"
      selectedValue={[]}
      onValueChange={() => {}}
    >
      <Checkbox
        name="parent"
        value="parent"
        label="Select all"
        ref={ref}
        checked={isAll}
        onChange={() => {
          setChildValues(isAll ? [] : allValues);
        }}
      />
      {allValues.map((v) => (
        <Checkbox
          key={v}
          name="children"
          value={v}
          label={`Child ${v.toUpperCase()}`}
          checked={childValues.includes(v)}
          onChange={(e) => {
            setChildValues((prev) =>
              e.target?.checked ? prev.concat([v]) : prev.filter((x) => x !== v)
            );
          }}
        />
      ))}
    </CheckboxGroup>
  );
};

API Reference

Props

Checkbox

The Checkbox component accepts all standard HTML <input> attributes in addition to the following props:

Prop	Type	Required	Default
`isDisabled`	`boolean`	No	`false`
`variant`	`'primary' \| 'secondary'`	No	`'primary'`
`value`	`string`	No	—
`name`	`string`	Yes	—
`label`	`ReactNode`	Yes	—
`error`	`boolean`	No	`false`
`hideLabel`	`boolean`	No	`false`
`useUnderlay`	`boolean`	No	`false`
`controlAlign`	`InputControlAlign`	No	`'start'`

CheckboxGroup

The CheckboxGroup component accepts the following props:

Prop	Type	Required	Default
`id`	`string`	Yes	—
`name`	`string`	Yes	—
`selectedValue`	`string[]`	Yes	—
`errorMessage`	`string`	No	—
`label`	`string`	No	—
`labelOptions`	`FormGroupLabelProps`	No	—
`description`	`string`	No	—
`children`	`ReactNode`	Yes	—
`onValueChange`	`(value: string[]) => void`	Yes	—

Type Definitions

Checkbox

export type InputControlAlign = 'start' | 'end';

export interface CheckboxDSProps {
  isDisabled?: boolean;
  variant?: 'primary' | 'secondary';
  value?: string;
  name: string;
  label: ReactNode;
  error?: boolean;
  hideLabel?: boolean;
  useUnderlay?: boolean;
  controlAlign?: InputControlAlign;
}

export type CheckboxProps = InputHTMLAttributes<HTMLInputElement> & CheckboxDSProps;

CheckboxGroup

export interface CheckboxGroupDSProps {
  id: string;
  name: string;
  selectedValue: string[];
  errorMessage?: string;
  label?: string;
  labelOptions?: FormGroupLabelProps;
  description?: string;
  children: ReactNode;
  onValueChange: (value: string[]) => void;
}

export type CheckboxGroupProps = CheckboxGroupDSProps;

Radio: For single mandatory choice.
Switch For immediate on/off toggles.
TagFilter: For removable selection chips.

Why to use​

When to use​

Content Guidelines​

Anatomy​

Key Checkbox Props​

variant​

isDisabled​

hideLabel​

controlAlign​

error​

checked / defaultChecked​

Key CheckboxGroup Props​

label​

description​

selectedValue​

errorMessage​

labelOptions​

Behavior​

Accessibility​

Implementation examples​

With description​

With error message​

Indeterminate state​

API Reference​

Props​

Checkbox​

CheckboxGroup​

Type Definitions​

Checkbox​

CheckboxGroup​

Related Components​

Why to use

When to use

Content Guidelines

Anatomy

Key Checkbox Props

variant

isDisabled

hideLabel

controlAlign

error

checked / defaultChecked

Key CheckboxGroup Props

label

description

selectedValue

errorMessage

labelOptions

Behavior

Accessibility

Implementation examples

With description

With error message

Indeterminate state

API Reference

Props

Checkbox

CheckboxGroup

Type Definitions

Checkbox

CheckboxGroup

Related Components