Run results for: Test prototype speed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Browser: Chrome 70

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
Prototype	0.0 Ops/sec
No prototype	17143434.0 Ops/sec

Script Preparation code:

var Vec2 = function(x, y) {
  this.x = x || 0;
  this.y = y || 0;
  return this;
};

Vec2.prototype.add = function(v, y) {
  if (arguments.length === 1) {
    this.x += v.x;
    this.y += v.y;
  } else {
    this.x += v;
    this.y += y;
  }
  return this;
};

Tests:

Prototype
var v = Vec2(); v.add(1, 1);
No prototype
var v = Vec2(); v.x += 1; v.y += 1;

Run results for: Test prototype speed

Prototype

No prototype