Javascript?

Question

how do you know the property and event names. example addEventListener( event, function ) where do you get the event names? also when you pass a handle or var with a function through. how do you know the property names? like mousemove.clientX.... (also applies to other languages).... basically where is the reference and can you just use code to find them.

Answer 1

https://www.w3schools.com/js/js_events.asp
https://www.w3schools.com/jsref/dom_obj_event.asp