A simple Javascript Module Pattern

JavascriptModulePattern.js

var myObject = (function(){
  var _private = {
    someVar: "This is private",
    privateFunction = function(){ /* do-something*/ };
  }
  return {
    publicVar : "This is public",
    publicFunction : function(){ 
      /*do-something*/
    },
    getSomeVar: function(){
      return _private.someVar;
    }
  }
}());

myObject._private  /* undefined */
myObject.getSomeVar() /* returns "This is private" */