Cheat Sheet of Formatter Methods

All these dot function thingies that Wappler creates… like .where(), .add(), .contains(), etc (are they called “methods” in programming?)… I have some questions about these:

1. What language are they?
   Are they technically javascript but methods created as part of dmxzone? What other language constructs can I put there? Because all the x==0?:y=0:y=1 syntax is javascript, right?

2. Where can I find just a nice little list/cheat sheet of all these method thingies I can use?

Thanks in anticipation,
Antony.