In A-Frame FAQ, it is written that:
Link traversal support was introduced in the WebVR 1.0 API and A-Frame 0.3.0. There is a link component that can trigger navigation and built-in support for knowing whether the user is navigating from another WebVR experience.
However, it seems there is no entry in A-Frame Docs about this link component. How could one use such a component to trigger link traversal ? Thank you.
Oops, that is a mistake. Built-in link traversal and documentation has not yet been introduced as we improve link traversal experiences in the WebVR specification and the browsers themselves.