Run results for: Qqqqqqq - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36

Browser: Chrome 57

Operating system: Fedora

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
1	191974.7 Ops/sec
2	123667.8 Ops/sec

Script Preparation code:

var as = [];
var as2 = [];
(function () {
  function A() {
    this.x = Math.random();
  }
  A.prototype.y = function (){};
  A.prototype.z = function (){};
  for (var i = 0; i < 15; ++i) {
    var a = new A();
    as.push(a);
    if (a.x < 0.5) {
      as2.push(a);
    }
  }
})();

Tests:

1
function f1 (run) { for (var i = 0; i < as.length; ++i) { if (run && as2.indexOf(as[1]) === -1) { as[i].y(); } else { as[i].z(); } } as = run ? as2 : as; }; f1(false); f1(true);
2
function f2 (run) { if (run) { for (var i = 0; i < as.length; ++i) { if (as2.indexOf(as[1]) === -1) { as[i].y(); } } as = as2; } for (var i = 0; i < as.length; ++i) { as[i].z(); } }; f2(false); f2(true);