Five ways to create objects....

1) and 2) are best suited for creation of one-time objects. 3), 4) and 5) define templates for creation of multiple objects with a shared design.

All are useful and none are wrong.. If I only needed one notebook in my app, I'd lean towards using 2) since it neatly encapsulates all properties within its defining closures. For multiple notebook "instances" I like 5) simply because I can lock generic properties into the prototype object, making the constructor cleaner and more efficient 

Next time I'll talk about how to employ object inheritance with each methodology.  

1. Simple Object Literal

myApp.notepad = {};

myApp.notepad.writeable = true;

myApp.notepad.font = 'helvetica';

myApp.notepad.setFont = function(theFont) {

    myApp.notepad.font = theFont;

}

2. Nested Object Literal

myApp.notepad = {

    writeable: true,

    font: 'helvetica',

    setFont: function(theFont) {

        this.font = theFont;

    }

}

3. Constructor using Object Literal

myApp.Notepad = function(defaultFont) {

    var that = {};

    that.writeable = true;

    that.font = defaultFont;

    that.setFont = function(theFont) {

        that.font = theFont;

    }
    return that;

}

myApp.notepad1 = myApp.Notepad('helvetica');

     

4. Simple Constructor for new

myApp.Notepad = function(defaultFont) {
    this.writeable = true;  
    this.font = defaultFont;
    this.setFont = function(theFont) {
        this.font = theFont;
    }
}
myApp.notepad1 = new myApp.Notepad('helvetica');

5. Prototype with Constructor for new

myApp.Notepad = function(defaultFont) {
    this.font = defaultFont;  
}
myApp.Notepad.prototype.writeable = true;
myApp.Notepad.prototype.setFont = function(theFont) {
    this.font = theFont;  
}
myApp.notepad1 = new myApp.Notepad('helvetica');