Function assigned to a variable

Question

As a newbie i would like to know that if we do

function square(x) { return x*x; }

and

var s = square;
square(4);

So basically the s is a new function in which the square function is copied? cause i am confused in this. please help.

Answer 1

so basically the s is a new function in which the square function is copied?

No, s is simply another "name" with which you can refer to the same function.

s === square will be true , ie both bindings will refer to the same object.

Answer 2

S is not a new function. It is merely a pointer to the square function. They are both the same.