Accessibility in EJ2 JavaScript Range Slider component

24 Jan 20244 minutes to read

The Range Slider 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 Range Slider component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Yes
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support Yes
Accessibility Checker Validation Yes
Axe-core Accessibility Validation Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - 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 Used to convey a significant and contextual message to the user.
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 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 Range Slider component.

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 levels are ensured through an accessibility-checker and axe-core software tools during automated testing.

The accessibility compliance of the Range Slider component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Range Slider component with accessibility tools.

See also