Run results for: findIndex vs indexOf - JavaScript performance

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

indexOf

2.1M/s

findIndex

3K/s

View exact numbers

Test name	Executions per second
✓ indexOf	2,090,511 Ops/sec
findIndex	2,700 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: