Exercise 8

// 1. Write a class to support the following code:
var Person = function(name) {
	this.name = name;
};


var thomas = new Person('Thomas');
var amy = new Person('Amy');

thomas.name; // --> "Thomas"

// 2. Add a getName() method to all Person objects, that outputs
// the persons name.
Person.prototype.getName = function() {
	return this.name;
};

thomas.getName(); // --> "Thomas"

// 3. Write a statement that calls Thomas's getName function,
// but returns "Amy".

// if person has no name, they will be Amy
Person.prototype.name = 'Amy';
// we could also just do it for the thomas instance by doing
// thomas.name = 'Amy';

delete thomas.name; // instance has no name anymore so we will go up the scope chain and get Amy back.
thomas.getName();
// or (without deleting thomas.name)
thomas.getName.call(amy);

// 4. Remove the getName() method from all Person objects.
delete Person.prototype.getName;
thomas.getName(); // will throw error