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Accessibility in Angular Range Slider component
26 Feb 20264 minutes to read
The Range Slider component conforms to accessibility standards and guidelines, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles commonly used to evaluate accessibility.
The accessibility compliance for the Range Slider 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 | |
| Accessibility Checker Validation | |
| 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 Range Slider component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Range Slider component:
| Attributes | Purpose |
|---|---|
role=slider |
Defines the slider as an interactive control for selecting values within a range. |
aria-valuemin |
Indicates the minimum value of the slider. |
aria-valuemax |
Indicates the maximum value of the slider. |
aria-valuenow |
Indicates the current value of the slider. |
aria-valuetext |
Returns the current text of the slider. |
aria-orientation |
Indicates whether the Slider is oriented horizontally or vertically. |
aria-label |
Provides an accessible name for the Slider, serving as label text for the Slider’s left and right buttons (for increment and decrement). |
Keyboard interaction
The Range Slider component follows keyboard interaction guidelines to support users of assistive technologies and keyboard-only navigation. The following keyboard shortcuts enable efficient slider control.
| Press | To do this |
|---|---|
| Right Arrow/Up Arrow | Increase the Slider value. |
| Left Arrow/Down Arrow | Decrease the Slider value. |
| Home | Moves to the start value (for Range Slider when the second thumb is focused and the Home key is pressed, it moves to the first thumb value). |
| End | Moves to the end value (for Range Slider when the first thumb is focused and the End key is pressed, it moves to the second thumb value). |
| Page Up | Increases the Slider by largeStep value. |
| Page Down | Decreases the Slider by largeStep value. |
Ensuring accessibility
The Range Slider component’s accessibility standards compliance is verified using the accessibility-checker and axe-core tools during automated testing. The following sample demonstrates the accessibility features of the Range Slider component. Open the sample in a new window to evaluate component accessibility with accessibility validation tools.