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I'm reading " Pro JavaScript Techniques " by John Resig , and I'm confused with an example. This is the code: // Create a new user object that accepts an object of properties function User( properties ) { // Iterate through the properties of the object, and make sure // that it's properly scoped (as discussed previously) for ( var i in properties ) { (function(){ // Create a new getter for the property this[ "get" + i ] = function() { return properties[i]; }; // Create a new setter for the property this[ "set" + i ] = function(val) { properties[i] = val; }; })(); } } // Create a new user object instance and pass in an object of // properties to seed it with var user = new User({ name: "Bob", age: 44 }); // Just note that the name property does not exist, as it's private // within the properties object alert( user.name == null ); // However, we're able to access its value using the new getname() // method, that was dynamically generated alert( user.getname() == "Bob" ); // Finally, we can see that it's possible to set and get the age using // the newly generated functions user.setage( 22 ); alert( user.getage() == 22 ); Now running that in the Firebug console (on Firefox 3) throws that user.getname() is not a function. I tried doing this: var other = User other() window.getname() // --> This works! And it worked! Why? Doing: var me = this; seems to work a bit better, but when executing "getname()" it returns '44' (the second property)... Also I find it strange that it worked on the window object without modification...</

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