Help with HTML Geolocation, please!

Question

I have no idea what any of this stuff means... what is a callback? What is the "asynchronous call"? Thanks in advance!

Parameters:
showLocation (mandatory): Defines the callback method that retrieves location information.
ErrorHandler(optional): Defines the callback method that is invoked when an error occurs in processing the asynchronous call.
Options (optional): Defines a set of options for retrieving the location information.

Answer 1

This might help https://www.tutorialspoint.com/html5/geolocation_getcurrentposition.htm