Run results for: Index an element in array.

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:144.0) Gecko/20100101 Firefox/144.0

Browser: Firefox 144

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
Array.indexOf	7091876.0 Ops/sec
Map.get	20703182.0 Ops/sec
Array.findIndex	8372764.5 Ops/sec
Array.indexOf Object	7513426.0 Ops/sec
Map.get Object	20961688.0 Ops/sec
Array.findIndex Object	3970407.0 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

const array = Array.from({ length: 10 }, () => Math.random());
const arrayObject = Array.from({ length: 10 }, () => ({ value: Math.random() }));
const map = new Map();
const mapObject = new Map();
array.forEach((v, i) => map.set(v, i));
arrayObject.forEach((v, i) => map.set(v, i));
const testArray = _.shuffle(array);
const testArrayObject = _.shuffle(arrayObject);

Tests:

Array.indexOf
testArray.forEach(v => { const index = array.indexOf(v); });
Map.get
testArray.forEach(v => { const index = map.get(v) ?? -1; });
Array.findIndex
testArray.forEach(v => { const index = array.findIndex(vv => v === vv); });
Array.indexOf Object
testArrayObject.forEach(v => { const index = arrayObject.indexOf(v); });
Map.get Object
testArrayObject.forEach(v => { const index = mapObject.get(v) ?? -1; });
Array.findIndex Object
testArrayObject.forEach(v => { const index = arrayObject.findIndex(vv => v === vv); });

Run results for: Index an element in array.

Array.indexOf

Map.get

Array.findIndex

Array.indexOf Object

Map.get Object

Array.findIndex Object