Run results for: Object arrays: findIndex vs for loop with logging

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.1

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
findIndex	920.4 Ops/sec
for loop	394.1 Ops/sec

Script Preparation code:

var arr = new Array(15000);
arr.fill({ id: 0 });
arr = arr.map((el, idx) => el.id = idx);
var foo = Math.floor(Math.random() * 15000);

Tests:

findIndex
const idx = arr.findIndex((itm) => itm.id === foo); console.log(idx)
for loop
for (let i = 0; i < arr.length; i++) { if (arr[i].id === foo) { console.log(i) break; } }