Split button

Overview

Expose a primary action and related alternatives. It transforms explicit intent into a command or navigation event without changing the accessible name during processing.

When to use

Use HE/Split button when you need to expose a primary action and related alternatives. Keep its role distinct from transport freshness, animal-health severity and model confidence.

Example

<div class="he-split-button"><button class="he-button">Export data</button><button class="he-button he-split-button__menu" aria-label="More export options" aria-haspopup="menu"><svg class="he-icon" aria-hidden="true"><use href="/assets/design-system/health-eye-icons.svg#chevron-down"></use></svg></button></div>

Anatomy

Anatomy stays identical in Pasture and Atlantic. A responsive layout may wrap or stack parts, but reading order and focus order remain equivalent.

Variants and states

Accessibility

Primary and menu controls are separate tab stops with distinct names.

• Maintain a visible keyboard focus indicator and a logical focus sequence.
• Never rely on colour alone for operational, freshness or severity state.
• Keep touch targets at least 44 × 44 px unless the target is an inline text link.

Cross-platform contract

Related components