The following code example shows all eight types of members and methods in one class; it also demonstrates which members are available to the different types of methods, and how they're accessed. Original post here : http://smorgasbork.com/index.php?option=com_content&view=article&id=132

CommonJS Fundamentals

var _privateStaticMember = 'PrSM';

function MyClass ()
{
    var _privateInstanceMember = 'PrIM';

    var _privateInstanceMethod = function ()
    {
        return _privateStaticMember + ',' 
            + _privateInstanceMember + ','
            + MyClass.publicStaticMember + ','
            + this.publicInstanceMember;
    };

    this.publicInstanceMember = 'PuIM';

    this.publicInstanceMethod = function () 
    {
        return _privateStaticMember + ',' 
            + _privateInstanceMember + ','
            + MyClass.publicStaticMember + ',' 
            + this.publicInstanceMember;
    };
}

var _privateStaticMethod = function ()
{
    return _privateStaticMember + ',' + MyClass.publicStaticMember;
};

MyClass.publicStaticMember = 'PuSM';

MyClass.publicStaticMethod = function ()
{
    return _privateStaticMember + ',' + MyClass.publicStaticMember;
};

module.exports = MyClass;