accessible-modal-dialog

Implement focus trapping in a modal dialog by confining keyboard navigation strictly to focusable elements within the overlay. This prevents keyboard-only users from tabbing into hidden background content until the dialog is dismissed.

Accessible modal dialogs require role assignments along with aria-labelledby and aria-describedby attributes. These ARIA labels ensure screen readers properly announce the dialog's title and descriptive context when the overlay opens.

The native <dialog> element provides built-in screen reader compatibility and focus management. However, you still need to apply ARIA attributes and ensure proper focus restoration for full accessibility compliance across all web applications.

Restore focus after closing an accessible modal by programmatically returning keyboard focus to the element that triggered the dialog. Proper focus management ensures screen reader users seamlessly resume navigation on the original page content.

The best way to handle Escape key dismissal in modal overlays is to bind a keyboard event listener that closes the dialog. This satisfies accessibility requirements for keyboard navigation and allows screen reader users to easily exit.

You can use custom modal implementations instead of the native <dialog> element, provided you manually assign ARIA roles, manage focus trapping, and handle background content accessibility to meet compliance standards for screen readers.