Run results for: findIndex vs indexOf - JavaScript performance

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Goanna/6.7 Firefox/128.0 PaleMoon/33.8.1.2

Browser: Pale Moon (Firefox Variant) 33

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

indexOf

158K/s

findIndex

57K/s

View exact numbers

Test name	Executions per second
✓ indexOf	157,523 Ops/sec
findIndex	56,573 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: