But its interface seems to be somewhat incomplete, it rarely provides "accName" or "accValue".
And if you use Firefox, the same page, we can get the complete information.
On this page: chrome://accessibility
To view the "show accessibility tree" option on the page, we can see that its ACC contains all the information.
But the problem is that we can not get this information.
I found some relevant documentation, for example here:
On Windows, the root node implements the IAccessible protocol and if you call IAccessible::get_accRole, it returns ROLE_SYSTEM_DOCUMENT, and if you call IAccessible::get_accName, it returns “How old are you?”. Other methods let you walk the tree.
But I can not understand how these data are connected.