Run results for: findIndex vs indexOf vs object property

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/105.0.5195.100 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 105

Operating system: iOS 15.6

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
indexOf	23732.2 Ops/sec
findIndex	2377.4 Ops/sec
object property	7482102.0 Ops/sec

Script Preparation code:

var arr = new Array(15000);
arr.fill('')
arr = arr.map(el => Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 8));
var foo = 'erjhfdjh';
arr[7500]=foo;
var obj = arr.reduce((acc,key,i)=>{acc[key]=i;return acc},{});

Tests:

indexOf
var index = arr.indexOf(foo);
findIndex
var index = arr.findIndex(o => o===foo);
object property
var index = obj[foo]