Object inheritance

gistfile1.js

var Base = {}
Object.defineProperty(Base, 'extend', {
	enumerable: false,
	value: function(obj) {
		var descs = {}

		Object.getOwnPropertyNames(obj).forEach(function(key) {
			descs[key] = Object.getOwnPropertyDescriptor(obj, key)
		})
		return Object.create(this, descs)
	}
})

var Foo = Base.extend({
    getBar: function() { return this.bar }
})

var foo = Foo.extend({ bar:10 })
console.log(foo.getBar()) // 10