Accessibility Best Practices - Comprehensive Guide

Alternative input methods should include keyboard shortcuts for navigation, buttons for scrolling up/down, or text input for specifying a position. ARIA live regions should be used to announce changes, and aria-grabbed and aria-dropeffect attributes should manage the state of drag operations, alongside providing visual feedback. Ideally, both approaches – drag-and-drop for mouse users and keyboard navigation for keyboard users – should be offered.

When navigating between ‘pages’ within a Single Page Application (SPA), programmatically set focus to the main content or a skip link. Utilize React Router or similar routing libraries with focus management features. ARIA live regions should be used to announce changes, maintaining focus state during navigation and restoring it upon return. Focus traps should be implemented for modals. Thorough testing with keyboard navigation is crucial to ensure a logical flow of focus.

aria-label provides a direct text label, such as ‘Close dialog’ (aria-label="Close dialog"). aria-labelledby references an element with a specific ID that contains the label; for example, aria-labelledby="dialog-title" (where id="dialog-title" holds the title). Use aria-label when the label isn't visible in the DOM, and aria-labelledby when the label already exists within the DOM. aria-describedby is used to provide supplementary descriptive information.

Text alternatives or summary descriptions should be provided for data tables accompanying graphics, keyboard navigation should be implemented for interactive elements, ARIA labels should be used for data points, the ability to export data should be offered, and detailed descriptions should be provided for trends and patterns. For complex charts, a comprehensive description or interactive exploration via keyboard should be included.