pattern-library checked
U.S. Web Design System Combo Box
Documents combo box use for choosing one item from a large list, filtering options by typed query, using select or radio controls for small option sets, preserving labels, and supporting accessible form states.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Combobox | Choose a combobox when a single field controls a popup of allowed or suggested values. | The combobox element owns or controls its popup with aria-controls when the popup is available. | USWDS supports combo box use for selecting one item from a large option set and points to select or radio controls when choices are limited. |
Evidence Role
This source is treated as pattern-library evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: U.S. Web Design System. Last checked: .