Run results for: closure lookup

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko

Browser: IE 11

Operating system: Windows

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
prototype function + "this"	16617020.0 Ops/sec
object function + closure	8927242.0 Ops/sec

Script Preparation code:

function s(obj){}

var C1 = (function () {
    function C1() {
        this.idToObject = { a: 1 };
    }
    C1.prototype.test = function () {
        s(this);
        this.idToObject.a++;
    };
    return C1;
}());

var C2 = (function () {
    function C2() {
        var self = this;
        var idToObject = self.idToObject = {a:1};
        self.test = function () {
            s(this);
            idToObject.a++;
        };
    }
    return C2;
}());
var c1 = new C1();
var c2 = new C2();

Tests:

prototype function + "this"
c1.test();
object function + closure
c2.test();

Run results for: closure lookup

prototype function + "this"

object function + closure