Accessibility in Blazor Dropdown Menu Component
28 Mar 20244 minutes to read
The Blazor Dropdown Menu component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.
The accessibility compliance for the Blazor Dropdown Menu component is outlined below.
| Accessibility Criteria | Compatibility |
|---|---|
| WCAG 2.2 Support |  |
| Section 508 Support | |
| Screen Reader Support | |
| Right-To-Left Support | |
| Color Contrast | |
| Mobile Device Support | |
| Keyboard Navigation Support | |
| Axe-core Accessibility Validation | |
- All features of the component meet the requirement.
- Some features of the component do not meet the requirement.
- The component does not meet the requirement.WAI-ARIA attributes
The Blazor Dropdown Menu component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Blazor Dropdown Menu component:
| Attributes | Purpose |
|---|---|
role |
Indicates the Dropdown Menu component as button, Dropdown Menu popup as menu, and the dropdown popup action items as menuitem. |
aria-haspopup |
Indicates the availability of the popup element. |
aria-expanded |
Indicates whether the popup can be expanded or collapsed, as well as indicates whether its current state is expanded or collapsed. |
aria-owns |
Identifies an elements in order to define a visual, functional, or contextual parent/child relationship between DOM elements where the DOM hierarchy cannot be used to represent the relationship. |
aria-disabled |
Indicates that the element is perceivable but disabled, so it is not editable or otherwise operable. |
Keyboard interaction
The Blazor Dropdown button component followed the keyboard interaction guideline, making it easy for people who use assistive technologies (AT) and those who completely rely on keyboard navigation. The following keyboard shortcuts are supported by the Blazor Dropdown Menu component.
| Press | To do this |
|---|---|
| Esc | Closes the popup. |
| Enter | Opens the popup, or activates the highlighted item and closes the popup. |
| Space | Opens the popup. |
| Up | Navigates up or to the previous action item. |
| Alt + Up Arrow | Closes the popup. |
| Alt + Down Arrow | Opens the popup. |
Ensuring accessibility
The Blazor Drop down component’s accessibility levels are ensured through an axe-core with playwright tests.
The accessibility compliance of the Blazor Dropdown Menu component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Blazor Dropdown Menu component with accessibility tools.