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Button / React

Displays a single important action a user can take.

To implement Button component into your project you’ll need to add the import:

import Button from "@kiwicom/orbit-components/lib/Button";

After adding import into your project you can use it simply like:

<Button>Hello World!</Button>

Props

Table below contains all types of the props available in Button component.

Name Type Default Description
ariaControls string Id of the element the button controls.
ariaExpanded boolean Tells screen reader the controlled element from ariaControls is expanded
asComponent string | React.Element "button" The component used for the root node.
fullWidth boolean false If true, the Button will grow up to the full width of its container.
circled boolean false If true, the Button will have circular shape.
children React.Node The content of the Button. See Functional specs
dataTest string Optional prop for testing purposes.
disabled boolean false If true, the Button will be disabled.
external boolean false If true, the Button opens link in a new tab. See Functional specs
href string The URL of the link to open when Button is clicked. See Functional specs
iconLeft React.Node The displayed icon on the left.
iconRight React.Node The displayed icon on the right.
loading boolean false If true, the loading glyph will be displayed.
onClick event => void | Promise Function for handling onClick event.
ref func Prop for forwarded ref of the Button.
rel string Specifies the rel of an element. See Functional specs
role string Specifies the role of an element.
size enum "normal" The size of the Button.
spaceAfter enum Additional margin-bottom after component. See this docs
submit boolean false If true, the Button will have type="submit" attribute, otherwise type="button".
tabIndex string | number Specifies the tab order of an element.
title string Adds aria-label.
type enum "primary" The type of Button.
width string The width of the Button. Can be any string – 100px, 20%.

enum

type size
"primary" "small"
"secondary" "normal"
"critical" "large"
"white"
"primarySubtle"
"criticalSubtle"

Functional specs

  • When the external is specified, noopener and noreferrer values will automatically added to attribute rel for security reason.
  • By passing the href prop into Button, it will render into a element. If you pass asComponent prop it will override this logic.
  • If you want to render Icon only Button, you just need to let children prop empty and set up any icon you want to use.
  • If you want to use the asComponent prop then YourComponent should accept at least className. Otherwise it won’t be rendered with proper styling, e.g.:
  const YourComponent = props => <div {...props} />

  <Button asComponent={YourComponent}>Title</Button>

If you specify the children of YourComponent component, it will override the children prop of Button component, e.g.:

  const YourComponent = props => <div {...props}>YourComponent</div>;

Accessibility

A button is mainly used for indicating an action, submitting a data, opening a modal etc. If you want to use Button for navigation consider using a <TextLink> for that.

  • Use ariaControls prop to add aria-controls attribute to establish the relationship between button and element which is controlled by it. aria-controls works only with a unique id of an element.

  • Use ariaExpands prop to add aria-expands to indicate screenreaders, that element controlled by button through ariaControls is expanded or not.

  • Use disabled prop to indicate users that button is inactive and they can’t interact with it.

  • Use role and tabIndex when you are rendering Button to non-actionable HTML element as div or span. However, this should be done only in edge-cases as it is anti-pattern behavior.

  • Use title to add aria-label when you need to add extra informations to screen readers or there is no children presented to be used as label.