IIFE Example

account.js

var account = (function(account_name) {
  var number_of_logins = 0;
  var profile_name = "";
  var login = account_name;
  return {
    login    : function() { return login; },
    name     : function() { return profile_name; },
    setName  : function(name) { profile_name = name; },
    increment: function() { number_of_logins++; },
    count    : function() { return number_of_logins; }
  }
} ("admin"));

account.setName("Ken Anderson");

console.log("account.login: %s", account.login());
console.log("account.name : %s", account.name());
console.log("account.count: %d", account.count());
console.log("Login twice...");
account.increment();
account.increment();
console.log("account.count: %d", account.count());