# Checks

Create consistent cross-browser and cross-device checkboxes and radios with our completely rewritten checks component.

## Approach

Browser default checkboxes and radios are replaced with the help of `.form-check`, a series of classes for both input types that improves the layout and behavior of their HTML elements, that provide greater customization and cross browser consistency. Checkboxes are for selecting one or several options in a list, while radios are for selecting one option from many.

Structurally, our `<input>`s and `<label>`s are sibling elements as opposed to an `<input>` within a `<label>`. This is slightly more verbose as you must specify `id` and `for` attributes to relate the `<input>` and `<label>`. We use the sibling selector (`~`) for all our `<input>` states, like `:checked` or `:disabled`. When combined with the `.form-check-label` class, we can easily style the text for each item based on the `<input>`'s state.

Our checks use custom Bootstrap icons to indicate checked or indeterminate states.

## Checks

Default checkbox
Checked checkbox

                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault">
                            <label class="form-check-label" for="flexCheckDefault">
                              Default checkbox
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckChecked" checked>
                            <label class="form-check-label" for="flexCheckChecked">
                              Checked checkbox
                            </label>
                          </div>

## Checkbox Shapes

Custom `<select>` menus need only a custom class, `.form-select` to trigger the custom styles. Custom styles are limited to the `<select>`'s initial appearance and cannot modify the `<option>`s due to browser limitations.

                          <div class="form-check form-check-inline rounded-none">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault1" checked>
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault2" checked>
                          </div>
                          <div class="form-check form-check-inline form-check-rounded">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckChecked3" checked>
                          </div>

## Indeterminate

Checkboxes can utilize the `:indeterminate` pseudo class when manually set via JavaScript (there is no available HTML attribute for specifying it).

Indeterminate checkbox

                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckIndeterminate">
                            <label class="form-check-label" for="flexCheckIndeterminate">
                              Indeterminate checkbox
                            </label>
                          </div>

## Disabled

Add the `disabled` attribute and the associated `<label>`s are automatically styled to match with a lighter color to help indicate the input’s state.

Disabled checkbox
Disabled checked checkbox

                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDisabled" disabled>
                            <label class="form-check-label" for="flexCheckDisabled">
                              Disabled checkbox
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckCheckedDisabled" checked disabled>
                            <label class="form-check-label" for="flexCheckCheckedDisabled">
                              Disabled checked checkbox
                            </label>
                          </div>

## Radios

Default radio
Default checked radio

                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="flexRadioDefault" id="flexRadioDefault1">
                            <label class="form-check-label" for="flexRadioDefault1">
                              Default radio
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="flexRadioDefault" id="flexRadioDefault2" checked>
                            <label class="form-check-label" for="flexRadioDefault2">
                              Default checked radio
                            </label>
                          </div>

## Disabled

Add the `disabled` attribute and the associated `<label>`s are automatically styled to match with a lighter color to help indicate the input’s state.

Disabled radio
Disabled checked radio

                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="flexRadioDisabled" id="flexRadioDisabled" disabled>
                            <label class="form-check-label" for="flexRadioDisabled">
                              Disabled radio
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="flexRadioDisabled" id="flexRadioCheckedDisabled" checked disabled>
                            <label class="form-check-label" for="flexRadioCheckedDisabled">
                              Disabled checked radio
                            </label>
                          </div>

## Switches

A switch has the markup of a custom checkbox but uses the `.form-switch` class to render a toggle switch. Switches also support the `disabled` attribute.

Default switch checkbox input
Checked switch checkbox input
Disabled switch checkbox input
Disabled checked switch checkbox input

                          <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckDefault">
                            <label class="form-check-label" for="flexSwitchCheckDefault">Default switch checkbox input</label>
                          </div>
                          <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked" checked>
                            <label class="form-check-label" for="flexSwitchCheckChecked">Checked switch checkbox input</label>
                          </div>
                          <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckDisabled" disabled>
                            <label class="form-check-label" for="flexSwitchCheckDisabled">Disabled switch checkbox input</label>
                          </div>
                          <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckCheckedDisabled" checked disabled>
                            <label class="form-check-label" for="flexSwitchCheckCheckedDisabled">Disabled checked switch checkbox input</label>
                          </div>

## Default (stacked)

By default, any number of checkboxes and radios that are immediate sibling will be vertically stacked and appropriately spaced with `.form-check`.

Default checkbox
Disabled checkbox

                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="defaultCheck1">
                            <label class="form-check-label" for="defaultCheck1">
                              Default checkbox
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="checkbox" value="" id="defaultCheck2" disabled>
                            <label class="form-check-label" for="defaultCheck2">
                              Disabled checkbox
                            </label>
                          </div>

Default radio
Second default radio
Disabled radio

                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios1" value="option1" checked>
                            <label class="form-check-label" for="exampleRadios1">
                              Default radio
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios2" value="option2">
                            <label class="form-check-label" for="exampleRadios2">
                              Second default radio
                            </label>
                          </div>
                          <div class="form-check">
                            <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios3" value="option3" disabled>
                            <label class="form-check-label" for="exampleRadios3">
                              Disabled radio
                            </label>
                          </div>

## Sizing

You may also choose from small and large checks to match our similarly sized text inputs.

                          <div class="form-check form-check-sm form-check-inline">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault10">
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault20">
                          </div>
                          <div class="form-check form-check-lg form-check-inline">
                            <input class="form-check-input" type="checkbox" value="" id="flexCheckDefault30">
                          </div>

                          <div class="form-check form-check-sm form-check-inline">
                            <input class="form-check-input rounded-pill" type="checkbox" value="" id="flexCheckDefault4">
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input rounded-pill" type="checkbox" value="" id="flexCheckDefault5">
                          </div>
                          <div class="form-check form-check-lg form-check-inline">
                            <input class="form-check-input rounded-pill" type="checkbox" value="" id="flexCheckDefault6">
                          </div>

You may also choose from small and large radio to match our similarly sized text inputs.

                          <select class="form-select" size="3" aria-label="multiple select example">
                            <option selected>Open this select menu</option>
                            <option value="1">One</option>
                            <option value="2">Two</option>
                            <option value="3">Three</option>
                          </select>

You may also choose from small and large switch to match our similarly sized text inputs.

                          <div class="form-check form-check-sm form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked101" checked="">
                          </div>
                          <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked102" checked="">
                          </div>
                          <div class="form-check form-check-lg form-switch">
                            <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked103" checked="">
                          </div>

## Inline

Group checkboxes or radios on the same horizontal row by adding `.form-check-inline` to any `.form-check`.

1
2
3 (disabled)

                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="checkbox" id="inlineCheckbox1" value="option1">
                            <label class="form-check-label" for="inlineCheckbox1">1</label>
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="checkbox" id="inlineCheckbox2" value="option2">
                            <label class="form-check-label" for="inlineCheckbox2">2</label>
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="checkbox" id="inlineCheckbox3" value="option3" disabled>
                            <label class="form-check-label" for="inlineCheckbox3">3 (disabled)</label>
                          </div>

1
2
3 (disabled)

                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio1" value="option1">
                            <label class="form-check-label" for="inlineRadio1">1</label>
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio2" value="option2">
                            <label class="form-check-label" for="inlineRadio2">2</label>
                          </div>
                          <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio3" value="option3" disabled>
                            <label class="form-check-label" for="inlineRadio3">3 (disabled)</label>
                          </div>

## Without labels

Omit the wrapping `.form-check` for checkboxes and radios that have no label text. Remember to still provide some form of label for assistive technologies (for instance, using `aria-label`).

                          <div>
                            <input class="form-check-input" type="checkbox" id="checkboxNoLabel" value="" aria-label="...">
                          </div>

                          <div>
                            <input class="form-check-input" type="radio" name="radioNoLabel" id="radioNoLabel1" value="" aria-label="...">
                          </div>

## Toggle buttons

###### Checkbox toggle buttons

Bootstrap’s `.btn` styles can be applied to `<label>`s, to provide checkbox style button toggling. Add an input with a `.btn-check` class as previous sibling to toggle the input state.

Single toggle

                          <input type="checkbox" class="btn-check" id="btn-check">
                          <label class="btn btn-primary" for="btn-check">Single toggle</label>

## Radio toggle buttons

Toggle buttons can be grouped in a button group if needed.

Checked Radio Radio

                          <div class="btn-group">
                            <input type="radio" class="btn-check" name="options" id="option1" checked>
                            <label class="btn btn-primary" for="option1">Checked</label>

                            <input type="radio" class="btn-check" name="options" id="option2">
                            <label class="btn btn-primary" for="option2">Radio</label>

                            <input type="radio" class="btn-check" name="options" id="option3">
                            <label class="btn btn-primary" for="option3">Radio</label>
                          </div>

## Outlined styles

Different variants of `.btn`, such at the various outlined styles, are supported.

Single toggle
Checked
Checked success radio Danger radio

                          <input type="checkbox" class="btn-check" id="btn-check-outlined">
                          <label class="btn btn-outline-primary" for="btn-check-outlined">Single toggle</label><br>

                          <input type="checkbox" class="btn-check" id="btn-check-2-outlined" checked>
                          <label class="btn btn-outline-primary" for="btn-check-2-outlined">Checked</label><br>

                          <input type="radio" class="btn-check" name="options-outlined" id="success-outlined" checked>
                          <label class="btn btn-outline-success" for="success-outlined">Checked success radio</label>

                          <input type="radio" class="btn-check" name="options-outlined" id="danger-outlined">
                          <label class="btn btn-outline-danger" for="danger-outlined">Danger radio</label>