Error pages
Button
Carry out an important action or navigate to another page.
Props
action
string
Action identifier passed in click events for event delegation patterns.
actionArg
string
Single argument value passed with the action in click events.
actionArgs
Record<string, unknown>
Multiple argument values passed with the action in click events.
disabled
boolean
When true, prevents user interaction and applies disabled styling.
leadingIcon
GoabIconType
Icon displayed before the button text.
size
GoabButtonSize
Controls the size of the button. Use "compact" for inline actions or space-constrained layouts.
Defaults to
normal.
testId
string
Sets a data-testid attribute for automated testing.
trailingIcon
GoabIconType
Icon displayed after the button text.
type
GoabButtonType
Sets the visual style of the button. Use "primary" for main actions, "secondary" for alternative actions, "tertiary" for low-emphasis actions, "start" for prominent call-to-action buttons, and "text" for text-only buttons.
Defaults to
primary.
variant
GoabButtonVariant
Sets the color variant for semantic meaning. Use "destructive" for delete or irreversible actions, "inverse" for light-colored text on dark backgrounds, and "dark" for dark text color on text buttons only. Note: "dark" has no effect on non-text button types.
Defaults to
normal.
width
string
Sets a custom width for the button (e.g., "200px" or "100%").
mt, mr, mb, ml
Spacing
Apply margin to the top, right, bottom, and/or left of the component.
Events
onClick
() => void
Callback fired when the button is clicked.
Activate a specific tab with a button
Add a filter chip
Button with Icon
Card view of case files
Disabled button with a required field
Display user information
Dynamically add an item to a dropdown list
Filter a list using a push drawer
Filter data in a table
Hero banner with actions
Question page
Reset date picker field
Review and action
Set a specific tab to be active
Show a notification
Show a notification with an action
Show a user progress
Show a user progress when the time is unknown
Show different views of data in a table
Show status in a table
States
Only use disabled buttons if research shows it makes the user interface easier to understand.
Consider removing options that are unavailable or not applicable. Show actions that are only relevant and useful to the user at a given time.
Don't
Avoid using disabled buttons. They have poor contrast and can confuse users.
Instead of disabling a submit button, keep it enabled and provide clear feedback about any missed fields or input errors when the user tries to submit the form.
Do
Keep buttons enabled and use error handling to provide clear feedback when the user submits.
When you must disable a button or input:
- Provide nearby text explaining what needs to happen first
- Consider showing the element enabled with validation on submit instead
- Use aria-describedby to link the disabled element to explanatory text
Don't
Don't disable buttons or inputs without explaining why. Disabled controls can be confusing and users may not understand why they can't interact with an element.
Sizing
Do
Use compact buttons in dense spaces like tables or container title bars.
Don't
Don't use different button sizes in the same area to emphasize hierarchy.
Don't
Don't stack standard and full width buttons.
Do
Use full width buttons on mobile.
Content
Do
Use one word to explain the function whenever possible, such as "Save", "Submit", or "Search".
Do
Use descriptive language in both modal content and button text to inform users of the resulting destructive action.
Don't
Don't use all uppercase or all lowercase to label buttons.
Do
Button labels should clearly describe what happens when clicked. Use specific verbs like "Submit application" or "Save draft" instead of generic labels like "OK" or "Click here".
Types
Button types
- Primary - If there is only one button on a page, it should be a primary button. For citizen facing applications, generally there should only be one primary button on a page.
- Secondary - Use secondary buttons for less important actions on a page. Often paired with a primary action as a secondary action.
- Tertiary - Use tertiary buttons for links that should function like a button, such as “edit” or “cancel” in applications. It’s okay to use more than one tertiary button on a page.
Do
Use the destructive button variant for actions that cannot be easily undone, like permanently deleting data or removing a user from a system.
Don't
Don't use a destructive button to trigger a confirmation. Reserve destructive styling for the final action inside the modal.
Don't
Avoid using more than one primary button per page. Multiple primary buttons create visual competition and make it unclear which action is most important.
Do
Use a primary button for main actions and a secondary button for less important actions.
This distinction matters for screen reader users who expect different behaviors, keyboard navigation patterns, and browser history.
Do
Use a button for actions that trigger functionality (submit, save, cancel). Use a link for navigation to different pages or external websites.
Don't
Don't use Button for simple navigation (use Link), toggling state (use Toggle or Checkbox), or minor utility functions (use Icon Button).
Do
Use a button when you need users to take a specific action, such as submitting a form, starting a process, or confirming a decision.
Icons
Do
Use icons with a clear visual association to the action.
Don't
Don't use icons that don't have a clear visual association to the intended outcome.
Do
Use a text label with an icon, especially for public-facing applications and novice users.
Positioning
Don't
Don't group more than 3 actions together. Consider using an overflow menu for additional options.
Do
Use a button group when putting multiple buttons together.
Other
Tip
Use Link for navigation to other pages. Use Button for actions that change state or trigger functionality.
Screen Readers
For icon buttons with both a label and icon, hide the icon from the screen reader so it announces “Button, add row” not “Button, cross icon, add row”.
Don't
Don't read the icon class or description for icon buttons with labels. Screen readers should read the button label only.
Do
Icon-only buttons must include a descriptive label for screen readers.
Focus
Don't
Don't focus on just the icon within a button. Focus the button as a whole.
