Javascript module-submodule pattern

module-submodule-pattern.js

var Module = (function() {
  var ModuleBase = function(params) {
      this.params = params || {};
  }
  
  var submodules = {
      "module1" : "SubModule"
  };

    for(var key in submodules) {
      var modulename = submodules[key];
      // Create methods for FabBase
      // based on specified Sub Modules
      // *** ARRGH *** CLOSURE .. Remember to have variables passed to closure when assigning something inside a loop
      ModuleBase.prototype[key] = (function(modulename) {
        var obj = '';
        // I am binding a function which returns object of the submodule created on call
        // Example : fabObj.admin()
        return function(params) {
          if(obj == "") {
            if(typeof(this) != "object") {
              obj = null;
              return obj
            };
            obj = new ModuleBase[modulename](params,this);
            if(typeof(obj["init"]) == "function") obj["init"]();
          }
          return obj;
        };
      }(modulename));
    }

  return ModuleBase;
})();

// SubModule.js
var Module = (function(Module) {
  Module.SubModule = function(params,base) {
      this.base = base;
      this.params = params || {};
  }
  Module.SubModule.prototype.init = function() {
      console.log("init");
  };
  Module.SubModule.prototype.m1 = function() {
      console.log("m1");
  };
  Module.SubModule.prototype.m2 = function() {
      console.log("m2");
  };
  return FabModule;
})(Module);


var obj = new Module();
// creates object of SubModule if not present
obj.module1().m1();
obj.module1().m2()