why function puzzle could be call with ()()

Question

function puzzle(){
return function(){
console.log(arguments);
}
}
puzzle('a','b','c')(1,2,3);

Answer 1

Call the return of puzzle (which is a function) with arguments (1,2,3)

Long form:
Myfunc = puzzle()
Myfunc(1,2,3)

Welcome in the world of functional programming where functions are first class objects.
It is a bootcamp for each brain at the beginning. But some guys are addicted to it.

Answer 2

Luise Chen 💯👍🏻

Answer 3

@Oma Falk thanks, I got it, so the paremeters ('a','b','c') didn't pass to arguments in return. The function in return just take(1,2,3) as arguments