Run results for: FindIndex + splice vs filter

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/101.0 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 15

Operating system: iOS 15.5

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
FindIndex + splice	5305972.5 Ops/sec
filter	10903621.0 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:

FindIndex + splice
var index = arr.indexOf(foo); var newArr = arr.splice(index, 1);
filter
var index = arr.filter(el => el !== foo)