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Accessibility in JavaScript (ES5) Carousel control

29 Sep 2022 / 2 minutes to read

The JavaScript Carousel component has been designed, keeping in mind the WAI-ARIA specifications, and applying the WAI-ARIA roles, states and properties along with keyboard support for people who use assistive devices. WAI-ARIA accessibility support is achieved through attributes like aria-roledescription, aria-label, aria-current, aria-live, aria-role and aria-hidden. It provides information about elements in a document for assistive technology. The component implements keyboard navigation support by following the WAI-ARIA practices and has been tested in major screen readers.

ARIA attributes

The carousel component is designed by considering WAI-ARIA standard. Carousel is supported with ARIA Accessibility which is accessible by on-screen readers and other assistive technology devices. The following list of attributes is added to the Carousel.

Roles and Attributes Functionalities
aria-roledescription The role description attribute should be added for the root element (carousel) and each carousel slide item (slide).
aria-label Previous, next and play/pause buttons and all indicator elements.
aria-current For the active item indicator element, aria-current is set to true.
aria-hidden For all carousel elements except the currently visible item, aria-hidden is set to true.
aria-live For carousel items element, when autoPlay is true, aria-live is set to off; when autoPlay is false, aria-live is set to polite.
aria-role For carousel slide item, aria-role should be group.

Keyboard interaction

By default, keyboard navigation is enabled. This component implements keyboard navigation support by following the WAI-ARIA practices. Once focused on the active Carousel element, you can use the following key combination for interacting with the Carousel.

Key Description
Alt + J Keys to focus the carousel component (done at application end).
Arrows Keys to navigate between slides.
Home To navigate to the first slide.
End To navigate to the last slide.
Space To play/pause the slide transitions.
Enter To perform the respective action on its focus.