Run results for: Set vs Object delete

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Set

74.7M/s

Object

61.6M/s

View exact numbers

Test name	Executions per second
✓ Set	74,699,368 Ops/sec
Object	61,550,204 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);
}

Tests:

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