QWebEngineView - Asynchronous functions and Exposing QObjects to the script engine

[sandro4912]

Currently I prepare for the Widgets UI Exam.

In the curriculum under QWebEngineView is stated to know:

Asynchronous functions

Exposing QObjects to the script Engine

What do they mean with asynchronous functions? Could It be the slots of QWebEngineView which would be simply back(), forward(), reload() and stop() ?

And what could mean Exposing QObjects to the script Engine with QWebEngineView ? From what I found you can run javascript code wiht QWebEnginePage ?