What is aria-Describedby attribute?
The aria-describedby attribute is used to indicate the IDs of the elements that describe the object. It is used to establish a relationship between widgets or groups and text that described them. The Examples section below provides more information about how to use the attribute in these cases.
Do aria-Describedby attributes provide additional information?
Generally speaking the attribute aria-describedby provides the screen reader with the additional information to be announced along the content of the element (not the only but the most common use-case).
What is the difference between the aria label and aria-Labelledby attributes?
aria-labelledby may be used on any element, not just labelable elements. While a label element refers to the thing it labels, the relationship is reversed in the the case of aria-labelledby — the thing being labeled refers to the thing that labels it.
What is the difference between aria Labelledby and aria-Describedby?
The aria-labelledby attribute establishes the programmatic relationship between the widget element and the element providing the label. The aria-describedby attribute establishes a programmatic relationship between a widget element and the element with the descriptive information.
Can aria-Describedby be hidden?
The aria-describedby attribute is commonly used to associate hidden descriptions with an element, although it is not required that the referenced element be hidden. The value of the attribute is the ID of the element that contains the description.
When do you use the ARIA describedby attribute?
The aria-describedby attribute is not used only for form elements; it is also used to associate static text with widgets, groups of elements, panes, regions that have a heading, definitions, and more. The Examples section below provides more information about how to use the attribute in these cases.
When to use a LWC ID for an element?
Instead, use the element’s class attribute or a data-* attribute like data-id. LWC id values are used for accessibility only. Let’s look at some code.
Is the WAI-ARIA property compatible with other languages?
WAI-ARIA States and Properties is compatible with other languages as well; refer to documentation in those languages. The aria-describedby property is not designed to reference descriptions on an external resource — since it is an ID, it must reference an element in the same DOM document.
How are accessibility attributes read in Lightning component?
Accessibility software interprets UI elements by reading the attributes aloud. attribute. Screen readers read attribute values to a user. When you consume a Lightning web component with a attribute, always specify a value. For example, the attribute.