Accessibility
Microsoft Edge introduces dynamic web accessibility features to provide you with more complete control over your accessibility story. Together, Dynamic ARIA and Command Events provide a mechanism for developers targeting the Microsoft Edge / EdgeHTML platform to respond to accessibility queries and commands dynamically via script rather than having to maintain accessibility state in static markup, or requiring a noisy and complex way of listening for executed commands.
Microsoft Edge provides the ariarequest event for responding to ARIA queries in script without the need to have information supplied in markup or as part of a DOM element. For more info, see the AriaRequestEvent reference.
Microsoft Edge provides the command event to hook commands being executed by accessibility tools, eliminating the need for you to listen to DOM attribute changes. For more info, see the CommandEvent reference.