Run results for: Index an element in array.

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

Map.get Object

79.6M/s

Map.get

56.2M/s

Array.findIndex Object

33.6M/s

Array.findIndex

26.1M/s

Array.indexOf Object

23.0M/s

Array.indexOf

16.1M/s

View exact numbers

Test name	Executions per second
✓ Map.get Object	79,620,016 Ops/sec
Map.get	56,192,728 Ops/sec
Array.findIndex Object	33,550,542 Ops/sec
Array.findIndex	26,086,694 Ops/sec
Array.indexOf Object	23,010,184 Ops/sec
Array.indexOf	16,079,459 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); });