Run results for: findIndex vs indexOf - JavaScript performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/139 Version/11.1.1 Safari/605.1.15

Browser: Safari 11

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

indexOf

322K/s

findIndex

118K/s

View exact numbers

Test name	Executions per second
✓ indexOf	322,198 Ops/sec
findIndex	117,522 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: