Javascript Inheritance

inheritance.js

// Some browsers do not support Object.create
if (typeof Object.create === 'undefined') {
	Object.create = function(prototype) {
		function C() {}
		C.prototype = prototype;
		return new C();
	}
}

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

Actor.prototype.greet = function(name) {
	console.log('hello, ' + name + '. I am ' + this.name);
}

function Staff(name) {
	Actor.call(this, name);
}

Staff.prototype = Object.create(Actor.prototype);

var staff = new Staff('franz');
staff.greet('guest');