Run results for: forEach vs findIndex

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; M2103K19PG) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.101 Mobile Safari/537.36

Browser: Chrome Mobile 98

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
findIndex	341.8 Ops/sec
ForEach	314.2 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 index = arr.findIndex((itm) => itm.id === foo);
ForEach
const index = -1; arr.forEach((value, i) => { if (value.id === foo) { index = i } });