Implementing private instance variables in Javascript

Question

I don\'t know how I\'ve missed this for so long. I\'ve been presuming private instance variables to work like this, but they don\'t. They\'re private (as in non-global), cer

Answer 1

A slight modification to the code using this will work. The correct instance of Printer.prototype.print was not being instantiated for the a object.

var Printer = (function(){
    var _word;

    Printer = function(word){
        this._word = word;
    }

    _print = function(){
        console.log(this._word);
    }

    Printer.prototype = {
        print: _print
    }

    return Printer;
})();

var a = new Printer("Alex");
var b = new Printer("Bob");

a.print(); //Prints Alex
b.print(); //Prints Bob