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WCAG: 1.3.1: Certain ARIA roles must contain particular children
Some ARIA parent
rolevalues applied to elements must contain specific child elements and
rolevalues to perform intended accessibility function.
For each role, WAI-ARIA explicitly defines which child and parent roles are allowable and/or required. ARIA
roles missing required child
roles will not be able to perform the accessibility functions intended by the developer.
Assistive technology needs to convey the context to the user. For example, in a
treeitem, it is important to know the parent (container), item, or siblings in the folder. This can be done in two ways:
- Code order or DOM: The necessary context is often clear from the code order or DOM.
- ARIA: ARIA (such as
aria-owns) can be used provide the relationships when the hierarchy is not the same as the code structure or DOM tree.