create-vs-new.js

/* Object.create() vs new Speed Test
 * @author Eric Hamilton
 * 
 * Result: For a few thousand objects, it
 * doesn't matter which way you go.
 * For hundreds of thousands of objects,
 * you might want to use new instead of 
 * Object.create().
 *
 * Tested on node v0.2.0
 * 50,000 objects:
 * new MyObject():		10-20ms
 * Object.create(proto): 	40-50ms
 */

"use strict";

var test = {
	configure : {
		times : 50000
	},
	Constructor : function () {
		this.a = 'a';
		this.b = 'b';
		this.c = 'c';
		this.d = 'd';
		this.e = 'e';
		this.f = 'yay, F!';
		this.g = "It's a mutha flippin' G thang";
		this.h = 24;
		this.i = false;
		this.j = true;
		this.k = 'special k';
	},
	myProto : {
		a : 'a',
		b : 'b',
		c : 'c',
		d : 'd',
		e : 'e',
		f : 'yay, F!',
		g : "It's a mutha flippin' G thang",
		h : 24,
		i : false,
		j : true,
		k : 'special k'
	},
	compare : {
		constructor : {
			name : 'Constructor',
			fn : function () {
				var obj = new test.Constructor();
			}
		},
		create : {
			name : 'Create',
			fn : function () {
				var obj = Object.create(test.myProto);
			}
		}
	}
};

(function () {
var results,
	key,
	compare = test.compare,
	times = +test.configure.times,
	start;
	console.log('Running ' + times + ' times:');
	for (key in compare) {
		if (compare.hasOwnProperty(key)) {
			times = +test.configure.times;
			start = new Date();
			while (times-- > 0) {
				compare[key].fn();
			}
			console.log((new Date() - start) + ' ms: ' + compare[key].name);
		}
	}
	return results;
}());