The #Accessibility Tree is the model of information that assistive technologies (such as screen readers) use to expose the components of an interface (incl a Web page) to their users.
Now in Chrome 64: Select an element in the DOM Tree, and the new #Accessibility pane shows you that element's position in the accessibility tree, as well as its ARIA attributes and computed properties.
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.@tink gave a nice introduction to the topic at one of our previous #w3cTPAC meetups, and you can watch and listen a similar talk of her from a couple of years ago youtube.com/watch?v=qi0tY60H…
Feb 2, 2018 · 4:32 PM UTC
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Right now, that accessibility tree is not exposed directly to developers (although it is directly influenced by the DOM); there is an ongoing exploration to exposing it in an Accessibility Object Model proposal wicg.github.io/aom/explainer… - developed on github github.com/wicg/aom
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