Run results for: findIndex vs indexOf - JavaScript performance

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36 OPR/64.0.3417.92

Browser: Opera 64

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

indexOf

97K/s

findIndex

1K/s

View exact numbers

Test name	Executions per second
✓ indexOf	97,170 Ops/sec
findIndex	1,431 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: