Run results for: class vs object vs function

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

function

72.0M/s

extra: for i

71.7M/s

object

70.0M/s

class

66.8M/s

View exact numbers

Test name	Executions per second
✓ function	71,980,544 Ops/sec
extra: for i	71,703,400 Ops/sec
object	70,031,072 Ops/sec
class	66,762,932 Ops/sec

Script Preparation code:

let i = 0;
function init() {
  i++;
}

const obj = {
  i: 0,
  init: function() {
    this.i++;
  }
};

class sample {
  constructor() {
    this.i = 0;
    this.init();
  }
  init() {
	this.i++;
  }
}
const cls = new sample();

Tests:

class
cls.init();
object
obj.init();
function
init();
extra: for i
for (let i=0; i<1; i++)