Run results for: set includes vs array includes size=2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

Browser: Chrome 75

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
array (first case)	101331000.0 Ops/sec
array (second case)	98696360.0 Ops/sec
Set (first case)	4544350.0 Ops/sec
Set (second case)	4498244.0 Ops/sec
Set (no case)	4509384.0 Ops/sec
array (no case)	91444130.0 Ops/sec

Website performance monitoring

Tests:

array (first case)
[1, 2].includes(1);
array (second case)
[1, 2].includes(2);
Set (first case)
new Set([1, 2]).has(1);
Set (second case)
new Set([1, 2]).has(2);
Set (no case)
new Set([1, 2]).has(3);
array (no case)
[1, 2].includes(3);