RadioButton Accessibility
Out of the box, the Telerik UI for ASP.NET Core RadioButton provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The RadioButton is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 AA standards and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the keyboard navigation for its component role, provides options for managing its focus and is tested against the most popular screen readers.
WAI-ARIA
This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.
| Selector | Attribute | Usage |
|---|---|---|
.k-radio | type=radio | Announces the radio type of the input. |
label for or aria-label or aria-labelledby | The input requires an accessible name that will be assigned to it. | |
aria-required=true | The attribute is rendered only when the RadioButton is in a form HTML element and announces the required state of the component. | |
aria-describedby=.k-form-hint id/.k-form-error id | Points to the hint for the input, or if the input is invalid, to the error message. This attribute should only be present when a hint is set or when the input is invalid. | |
checked=checked | Announces the checked state of the radio button. | |
disabled=disabled or aria-disabled=true | The attribute is rendered only when the radio input is disabled. | |
.k-invalid,.ng-invalid | aria-invalid=true | The attribute is rendered only when the radio button is in a form and announces the valid state of the component. |
Resources
WAI-ARIA Authoring Practices: Radio Group Pattern
Section 508
The RadioButton is fully compliant with the Section 508 requirements.
Testing
The RadioButton has been extensively tested automatically with axe-core and manually with the most popular screen readers.
To report any accessibility issues, contact the team through the Telerik Support System.
Screen Readers
The RadioButton has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |
Keyboard Navigation
For details on how the keyboard navigation works in Telerik UI for ASP.NET Core, refer to the Accessibility Overview article.