Blazor RangeSlider Accessibility
The Telerik UI for Blazor RangeSlider component is WCAG 2.1 AA and Section 508 compliant. The component also follows the WAI-ARIA best practices for implementing the keyboard navigation for its component role, and is tested against the popular screen readers.
Wai-Aria
Slider accessibility specification
The two focusable elements of the RangeSlider must implement the specification for the Slider component. Here is just one clarification for the use of aria-valuetext attribute:
| Selector | Attribute | Usage |
|---|---|---|
| .k-draghandle | aria-valuetext |
Specifies the text that would be announced based on the currently selected values in both handle elements (e.g. aria-valuetext="10 - 50"). |
Resources
WAI-ARIA specification for Slider
Section 508
The RangeSlider is compliant with the Section 508 requirements
Testing
The component has been extensively tested automatically with static code analyzers and manually with the most popular screen readers.
Any Accessibility Issues could be reported in Telerik Support System.
Screen Readers
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |