Run results for: Includes vs forEach

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.134 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 17.6.1

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

includes

78K/s

forEach

43K/s

View exact numbers

Test name	Executions per second
✓ includes	78,247 Ops/sec
forEach	43,127 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; });