Three ways of defining JavaScript classes

First Way:

function Apple(name,color)
{
this.name=name;
this.color=color;
this.getData=function(){
alert(this.name+":"+this.color);
}
}

var a=new Apple("Hey","red");

a.getData();

Advantage:

This way is normal way of defining objects . this is really useful and can
give onstructor option to the end user

Second Way:

var apple={

name:'heyyyyy',
color:'blue',
getData:function(){
alert(this.color+":"+this.name);
}
}

apple.getData();

Advantage:

This is direct way of defining object , here is no constructor option and
If you want to limit the class to singleton then go for this

Third Way:

var apple1= new function(name,color){

this.type=name;
this.color=color,
this.getData=function(){
alert(this.color+":"+this.type);
}

}

apple1.type="MMMM";
apple1.color="Red";

apple1.getData();

Advantage:

This is mixed way of above two ways . Here it is also singleton kind of
class . But there you can execute constructor only once .
As you are not giving the class name

Thanks
sitaram PV

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