Run results for: Includes vs forEach

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:142.0) Gecko/20100101 Firefox/142.0

Browser: Firefox 142

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

includes

347K/s

forEach

67K/s

View exact numbers

Test name	Executions per second
✓ includes	346,691 Ops/sec
forEach	66,551 Ops/sec

Script Preparation code:

var arr1 = Array.from(Array(100).keys(), x => ({ value: x, disabled: false }));
var arr2 = Array.from(Array(50).keys(), x => x * 2);

Tests:

includes
arr1.map(x => { if (arr2.includes(x.value)) x.disabled = true; return x; });
forEach
arr1.map(x => { arr2.forEach(y => { if (x.value === y) x.disabled = true; }); return x; });