Checkbox

A configurable Checkbox component used to gather user input through a checkbox.
The component can be used in combination with CheckboxGroup.

Import

React

// with @dhl-official/react-library:
import { DhlCheckbox } from "@dhl-official/react-library"

// with @dhl-official/ui-libraries/react-library:
import { DhlCheckbox } from "@dhl-official/ui-libraries/react-library"

Angular

If the DUIL has been installed, you can use the web component directly:

<dhl-checkbox></dhl-checkbox>

Vue.js

// with @dhl-official/vue-library:
import { DhlCheckbox } from "@dhl-official/vue-library"

// with @dhl-official/ui-libraries/vue-library:
import { DhlCheckbox } from "@dhl-official/ui-libraries/vue-library"

Code

React

<DhlCheckbox>Example Text</DhlCheckbox>

Angular

<dhl-checkbox>Example Text</dhl-checkbox>

Vue.js

<dhl-checkbox>Example Text</dhl-checkbox>

Interactive Demo

Migrating from DUIL 1.0

• Rename onChange to changeEvent
• Rename disabled to isDisabled
• Add formnovalidate

Readme

Usage

Dhl-checkbox

Snippets of code in HTML and JavaScript to show some of the use cases for the component. The code is not meant to be executed, but to be used as a reference for the usage of the component.
Angular, React and Vue usages are not included in this documentation, but can be easily derived from the HTML and JavaScript code.

default usage

<form novalidate>
  <dhl-checkbox
    name="checkbox-1"
    value="value1"
    >Checkbox 1</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-2"
    value="value2"
    >Checkbox 2</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-3"
    value="value3"
    >Checkbox 3</dhl-checkbox
  >

  <hr />

  <dhl-button
    type="reset"
    variant="outline"
    >reset</dhl-button
  >
  <dhl-button type="submit">submit</dhl-button>
</form>

<script>
  const form = document.querySelector("form");
  form.addEventListener("submit", async (e) => {
    e.preventDefault();
    console.log(Object.fromEntries(new FormData(form)));
    return await form.checkValidity();
  });
</script>

usage with validation (required) and (browser) default validation message

<form novalidate>
  <dhl-checkbox
    name="checkbox-1"
    value="value1"
    required
    >Checkbox 1</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-2"
    value="value2"
    required="true"
    >Checkbox 2</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-3"
    value="value3"
    required="false"
    >Checkbox 3</dhl-checkbox
  >

  <hr />

  <dhl-button
    type="reset"
    variant="outline"
    >reset</dhl-button
  >
  <dhl-button type="submit">submit</dhl-button>
</form>

<script>
  const form = document.querySelector("form");
  form.addEventListener("submit", async (e) => {
    e.preventDefault();
    console.log(Object.fromEntries(new FormData(form)));
    return await form.checkValidity();
  });
</script>

usage with validation (required) and custom validation message

<form novalidate>
  <dhl-checkbox
    name="checkbox-1"
    value="value1"
    required
    >Checkbox 1</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-2"
    value="value2"
    required="true"
    >Checkbox 2</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-3"
    value="value3"
    required="false"
    >Checkbox 3</dhl-checkbox
  >

  <hr />

  <dhl-button
    type="reset"
    variant="outline"
    >reset</dhl-button
  >
  <dhl-button type="submit">submit</dhl-button>
</form>

<script>
  const form = document.querySelector("form");
  const checkboxes = document.querySelectorAll("dhl-checkbox");
  const validationMessageInvalid = "This field is required";
  const validationMessageValid = "This field is valid";

  form.addEventListener("submit", async (e) => {
    e.preventDefault();
    const isValid = await e.target.checkValidity();
    checkboxes.forEach(async (checkbox) => {
      const elementValid = await checkbox.checkValidity();

      checkbox.validation = {
        type: elementValid ? Variants.valid : Variants.invalid,
        message: elementValid
          ? validationMessageValid
          : validationMessageInvalid,
      };
    });
    return isValid;
  });
</script>

usage with custom events

<form novalidate>
  <dhl-checkbox
    name="checkbox-1"
    value="value1"
    required
    >Checkbox 1</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-2"
    value="value2"
    required="true"
    >Checkbox 2</dhl-checkbox
  >
  <dhl-checkbox
    name="checkbox-3"
    value="value3"
    required="false"
    >Checkbox 3</dhl-checkbox
  >

  <hr />

  <dhl-button
    type="reset"
    variant="outline"
    >reset</dhl-button
  >
  <dhl-button type="submit">submit</dhl-button>
</form>

<script>
  const form = document.querySelector("form");
  const checkboxes = document.querySelectorAll("dhl-checkbox");

  checkboxes.forEach((checkbox) => {
    checkbox.addEventListener("dhlChange", async (e) => {
      const isValid = await e.target.checkValidity();
      console.log(e.target, "is valid:", isValid);
      return isValid;
    });
  });
</script>

Properties

Property	Attribute	Description	Type	Default
changeEvent	--	[DEPRECATED] Use dhlChange event instead. An optional onChange callback handler.	(event: MouseEvent) => void	undefined
checked	checked	An optional prop used to describe either a checked or unchecked state of the component.	boolean	false
dataAriaDescribedby	data-aria-describedby	An optional prop defining the list of reference IDs (separated by spaces), recommended when you want to an error message on your field.	string	undefined
dataAriaInvalid	data-aria-invalid	An optional prop used to indicate that the form value of the component does not conform to the expected format.	string	undefined
dataAriaLabel	data-aria-label	An optional prop defining the text read by the screen reader to represent the component; use this if you need different text to be read from label.	string	undefined
dataClassName	data-class-name	An optional class name prop for the component.	string	undefined
dataId	id	An optional prop. Gives a valid HTML ID attribute value for the component.	string	dhl-checkbox-${getRandomString()}
dataTestid	data-testid	An optional prop. The test id attached to the component as a data-testid attribute.	string	undefined
dataTracking	data-tracking	An optional data tracking prop for the component.	string	undefined
formNoValidate	form-no-validate	An optional prop used to set native formnovalidate attribute. This bypasses form control validation for form submission for the types image and submit.	boolean	undefined
isDisabled	is-disabled	An optional flag to define if the component is disabled.	boolean	undefined
name	name	An optional value to be set to the element HTML name attribute. It takes any valid value that can be used for the name attribute of an HTMLInputElement.	string	undefined
renderLabelAsDiv	render-label-as-div	An optional prop used to prevent a11y multiple label warning, setting renderLabelAsDiv to true presents the inner label as a "div" as opposed to a "label". Ensure that if set true, another label is used for the component - or the ariaLabel/ariaDescribedby prop is used.	boolean	undefined
required	required	An optional prop to flag the component as required within a form context.	boolean	undefined
size	size	An optional size prop for the component.	"md" \| "sm"	DHL_CHECKBOX.SIZE.MD
validation	--	An optional object to set-up a custom components validation state. Required Fields: message type	{ type: Variants.valid \| Variants.invalid \| Variants.note; message?: string; }	undefined
value	value	An optional prop defining the value of the component which is taken when a form is submitted.	string	undefined

Events

Event	Description	Type
dhlBlur	Event emitted when the component loses focus.	CustomEvent<FocusEvent>
dhlChange	Event emitted when the component changes value.	CustomEvent<{ value: string; }>
dhlClick	Event emitted when the component is clicked on.	CustomEvent<MouseEvent>
dhlFocus	Event emitted when the component receives focus.	CustomEvent<FocusEvent>

Methods

checkValidity() => Promise<boolean>

Checks the validity of the component.

Returns

Type: Promise<boolean>

A promise that resolves to true if the component is valid, otherwise false.

getCheckboxElement() => Promise<HTMLInputElement>

Retrieves the component asynchronously.

Returns

Type: Promise<HTMLInputElement>

A promise that resolves to the component.

getValidationMessage() => Promise<string>

Retrieves the validation message for the component.

Returns

Type: Promise<string>

A promise that resolves to a string representing the validation message.

reportValidity() => Promise<boolean>

Reports the validity of the component.

Returns

Type: Promise<boolean>

A promise that resolves to a boolean indicating whether the component is valid.

setValidity(validity: ValidityState, validationMessage?: string) => Promise<void>

Sets the validity state of the component.

Parameters

Name	Type	Description
validity	ValidityState	- The validity state to set.
validationMessage	string	- An optional validation message to set.

Returns

Type: Promise<void>

A Promise that resolves when the validity state is set.

willValidate() => Promise<boolean>

Returns a promise that resolves to true if the element will successfully validate, or false otherwise.

Returns

Type: Promise<boolean>

A promise that resolves to a boolean value indicating whether the element will validate.

Slots

Slot	Description
"unnamed"	unnamed children slot for text that accompanies the DhlCheckbox.

Dependencies

Used by

• dhl-selectable-card

Depends on

• dhl-icon-wrapper
• dhl-icon
• dhl-validation-feedback

Graph

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Built by DHL User Interface Library Team!