Run results for: Set.prototype.has vs Object.hasOwn

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0

Browser: Firefox 137

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
Object.hasOwn	4854.9 Ops/sec
Set.prototype.has	4503.9 Ops/sec

Script Preparation code:

window.myObject = {};
window.mySet = new Set();
for (let i = 1; i < 1001; i++) {
  window.myObject[i] = null;
  window.mySet.add(i);
}

AخA
 
window.myObject = {};window.mySet = new Set();for (let i = 1; i < 1001; i++) {  window.myObject[i] = null;  window.mySet.add(i);}

Tests:

Object.hasOwn
for (let i = 1000; i > 0; i--) { Object.hasOwn(window.myObject, i); }
for (let i = 1000; i > 0; i--) {
Object.hasOwn(window.myObject, i);
}
Set.prototype.has
for (let i = 1000; i > 0; i--) { window.mySet.has(i); }
for (let i = 1000; i > 0; i--) {
window.mySet.has(i);
}