Run results for: mybenchmark123313131 sadas4

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
array	294018.8 Ops/sec
set	581208.0 Ops/sec

Script Preparation code:

function f(n) { return ++n; }
var oldValue = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
var newValue = [1, 2, 3, 4, 5, 6, 7, 9, 10, 11];

Tests:

array
var addedIds = newValue.filter(userId => !oldValue.includes(userId)); var removedIds = oldValue.filter(userId => !newValue.includes(userId)); addedIds.forEach(userId => f(userId)); removedIds.forEach(userId => f(userId));
set
var oldSet = new Set(oldValue); var newSet = new Set(newValue); var addedIds = newValue.filter(userId => !oldSet.has(userId)); var removedIds = oldValue.filter(userId => !newSet.has(userId)); addedIds.forEach(userId => f(userId)); removedIds.forEach(userId => f(userId));