Example 3

example3.js

(function(){ //opens the closure
 
	//definition of private object Animal
	var Animal= function(){
		this.name="";
	};
	
	Animal.prototype={
		getAnimal : function(code){
			if(code=="c"){
				this.name="Cat";
			}
                        else if(code=="d"){
				this.name="Dog";
			}
			else{
				this.name="unknown";
			}
		}
	};
 
	//myLib public interface
	window.myLib = {
		selector : null,
		initialize : function(){
                        //public property instantiates an instance of Animal
			this.selector= new Animal(); 
		},
		selectAnimal : function(code){
			this.selector.getAnimal(code);
			return this.selector.name;
		}
        };
 
})(); //closes the closure

//initializes selector publicly 
window.myLib.initialize();
//Call selectAnimal publicly
//Returns 'Dog'
window.myLib.selectAnimal("d");