more_protos.md

Prototypical Inheritance

Tips

Copying the Prototype

function Person(name){
	this.name = name;
}

Person.prototype.greet = function(){	
	return "Hello! My name is " + this.name;
}

function Student(name){
	// masks all the constructor properties
	Person.call(this);
	this.name = name;
};

var Intermediary = function(){};
// Copy just the prototype
Intermediary.prototype = Person.prototype;
Student.prototype = new Intermediary;

• Turn this inheritance process into a function called inherits.
• Create a new Student. What's the constructor name of the new student?

This is an interesting idea of copying one objects prototype and returning an instance of a copy.

• How could we in general take an object and do this process with it?

    function createObject(protoObj){
    	function Intermediary(){}
    	Intermediary.prototype = obj;
    	return new Intermediary();
    }
  

• Let's use this createObject.

• What would we have to change with createObject to have it properly update the constructor property.