ARIA states and properties.

The aria-controls attribute is commonly used to associate an interactive element, such as a button or link, with the content or elements it controls. By providing this association, assistive technologies like screen readers can better understand the relationship between the interactive element and the controlled content, making the website more accessible to users with disabilities. Here are some specific examples of how aria-controls is commonly used:

Associating buttons with collapsible sections: A button that expands or collapses a section of content can use aria-controls to identify the specific section it controls. This helps screen reader users understand the action triggered by the button. Connecting tab panels with tab buttons: In a tabbed interface, the aria-controls attribute can be used for each tab button to identify the corresponding tab panel it controls. This allows screen reader users to navigate between tabs effectively. Linking dropdowns with dropdown menus: A button or link that opens a dropdown menu can use aria-controls to identify the specific dropdown menu it controls. This helps screen reader users understand the action triggered by the button or link. Associating dialog boxes with their triggers: A button or link that triggers a dialog box can use aria-controls to identify the specific dialog box it controls. This allows screen reader users to understand the purpose of the button or link. Connecting search forms with search results: A search button or link can use aria-controls to identify the search results container, providing context for screen reader users. Associating pagination controls with paginated content: Pagination buttons or links can use aria-controls to identify the specific page of content they control, enhancing navigation for screen reader users. In general, aria-controls is used whenever there is a one-to-one relationship between an interactive element and the content or elements it controls. By using aria-controls effectively, website developers can significantly improve the accessibility of their websites for users with disabilities.