Object.create vs Crockford vs Jorge vs Constructor vs "Safe" Constructor (v62)

Revision 62 of this benchmark created by Riccardo Bartoli on

Description

This adds a "safe" constructor that handles cases when it is called without 'new'.

Preparation HTML

<script>
    var sharedPrototype = {
        one: function() {
            return 1;
        },
        two: function() {
            return 2;
        },
        three: function() {
            return 3;
        }
    };

    var crockfordCreate = function(proto) {
        var f = function() {};
        f.prototype = proto;
        return new f();
    };

    var jorgeCreate = (function() {
        var f = function() {};
        return function(proto) {
            f.prototype = proto;
            return new f();
        };
    })();

    var Constructor = function() {};
    Constructor.prototype = sharedPrototype;

    var SafeConstructor = function() {
        if (!(this instanceof SafeConstructor)) {
            return new SafeConstructor()
        }
    };
    SafeConstructor.prototype = sharedPrototype;
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Object.create()
var instance = Object.create(sharedPrototype);
ready
Crockford Create
var instance = crockfordCreate(sharedPrototype);
ready
Jorge Create
var instance = jorgeCreate(sharedPrototype);
ready
Constructor, using new
var instance = new Constructor();
ready
Constructor, using new, without ()
var instance = new Constructor;
ready
SafeConstructor, using new
var instance = new SafeConstructor();
ready
SafeConstructor, without new
var instance = SafeConstructor();
ready
SafeConstructor, using new, without ()
var instance = new SafeConstructor;
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.