How to call some phone functions via javascript?

Question

JavaScript

I saw embedded widgets on some sites (for example, jivosite), which add options such as:
- call - click and the "phone" application opens and you can immediately call
- how to get there - click and the phone prompts you to choose which navigation application to use, and after selecting it opens this the application itself and builds the route
Question: how are these things implemented? I know about all sorts of fongeps that collect javascript into all sorts of .apk, but this is not it.

Answer 1

For the phone - the tel scheme: For maps, it is advised to refer to Apple Maps, which redirect users from Android to Google maps:<a href="tel:[phone]">[phone]</a>
http://maps.apple.com/?q=автомойка