Difference between types of object creation in javascript

Question

What's the difference between

var obj = new factoryCreation;

and

var obj = new factoryCreation();

in javascript.

Are these one and the same?? Assume factoryCreation is a function.

Answer 1

The MDN Web Docs says:

new Foo is equivalent to new Foo(), i.e. if no argument list is specified, Foo is called without arguments.