JS static method

foo.js

function Foo() {}

Foo.myStaticMethod = function() {
  console.log("what a cool method!");
};

Foo.myStaticMethod();

ubberfoo.js

var Foo = (function() {
  var myPrivateName;

  function InnerFoo(name, nickame) {
    myPrivateName = name;
    this.myPublicNickname = nickame;
  }

  InnerFoo.prototype.hey = function() {
    console.log("Hi, " + myPrivateName + "!");
  };

  InnerFoo.hiWorld = function() {
    console.log("Hi, world!");
  };

  return InnerFoo;
})();

Foo.hiWorld();
var myFoo = new Foo("Bob", "Bobby");
console.log(myFoo.myPublicNickname + " is public");
myFoo.hey();