Run results for: Set vs Object delete

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:130.0) Gecko/130.0 Firefox/130.0

Browser: Firefox Mobile 130

Operating system: Android

Device Platform: Mobile

Date tested: 8 months ago

Test name	Executions per second
Object	48074272.0 Ops/sec
Set	36277352.0 Ops/sec

Script Preparation code:

var set = new Set();
var object = {};
var array = new Array(5000).fill().map((_, i) => i);

for (let i = 0; i < array.length; i++) {
  object[i] = true;
}

for (let i = 0; i < array.length; i++) {
  set.add(i);
}

​x
 
var set = new Set();var object = {};var array = new Array(5000).fill().map((_, i) => i);​for (let i = 0; i < array.length; i++) {  object[i] = true;}​for (let i = 0; i < array.length; i++) {  set.add(i);}

Tests:

Object
delete object[40]
delete object[40]
Set
set.delete(40)
set.delete(40)