aria best practices

Increasing awareness and improving these tutorials is the best way to bring accessibility to the forefront. For HTML, these are, depending on the element: If the name is still empty, then for elements with a role that supports naming from child content, the content of the element is used. For example: If activating the button opens a dialog, the focus moves inside the dialog. Follow consistent patterns across a site. Il vaut mieux ne pas utiliser ARIA du tout que de l'utiliser mal. When the content is visible, the arrow or triangle typically points down. Suppressing table semantics of tables used for layout in circumstances where the table semantics do not convey meaningful relationships. W3C® (MIT, Writing semantically correct HTML is a huge step in writing documents that comply with ARIA standards. Quand vous utilisez ARIA il est important de tester avec plusieurs lecteurs d'écran et avec d'autres aides techniques car la raison d'être d'ARIA est d'améliorer l'expérience des utilisateurs qui utilisent ces aides techniques. When using roving tabindex to manage focus in a composite UI component, the element that is to be included in the tab sequence has tabindex of "0" and all other focusable elements contained in the composite have tabindex of "-1". This one is straightforward. For example, in a file system navigator that uses a tree view to display folders and files, When applied to an element with one of the roles that supports naming from child content, aria-label hides descendant content from assistive technology users and replaces it with the value of aria-label. And, in user interfaces with too many keyboard shortcuts, the excess shortcuts create cognitive load that make the most useful ones more difficult to remember. This section describes the status of this document at the time of its publication. The subsequent guidance applies to both patterns. Distinguish the element from other elements on the page. A menu that is visually persistent is a menubar. When the component container is loaded or created, set. Some of these prohibited or ambiguous patterns may appear logical and even yield desired names in some browsers. For a web page to be accessible, all interactive elements must be operable via the keyboard. Terms for understanding tree views include: When using a keyboard to navigate a tree, a visual keyboard indicator informs the user which node is focused. The aria-labelledby property is useful in a wide variety of situations because: It has the highest precedence when browsers calculate accessible names, i.e., it overrides names from child content and all other naming attributes, including aria-label. The following terms are used to describe components of a carousel. All this is only possible if the tree implements the GUI keyboard conventions as described in the ARIA tree pattern. N'utilisez-pas role="menu" et "menuitem" pour des menus de navigation. When adding additional accessibility measures to your site, it's important to remember that it isn’t an all or nothing task. Vous y trouverez le comportement au clavier que vous devrez implémenter ainsi que les attributs ARIA à utiliser. Persistence of focus: It is essential that there is always a component within the user interface that is active (document.activeElement is not null or is not the body element) and that the active element has a visual focus indicator. Type multiple characters in rapid succession: focus moves to the next node with a name that starts with the string of characters typed. In the following sections, meta key refers to the Windows key on Windows-compatible keyboards and the Command key on MacOS-compatible keyboards. Copyright Removing focusability from disabled elements can offer users both advantages and disadvantages. Significant revisions of guidance and implementation were made to the following design When the composite widget contains focus and the user presses a navigation key that moves focus within the widget, such as an arrow key: Change the value of aria-activedescendant on the container to refer to the element that should be reported to assistive technologies as active. So it's an aside, and then it's a footnote. When a single-select listbox receives focus: If none of the options are selected before the listbox receives focus, the first option receives focus. Providing elements with accessible names, and where appropriate, accessible descriptions is one of the most important responsibilities authors have when developing accessible web experiences. of the site sponsor, and site-specific search tool. If the description is still empty, then host-language-specific attributes or elements are used if present, if it wasn't already used as the accessible name. The content of this publication does not necessarily reflect the views or policies of the U.S. Department of Education, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government. -->,