Benchmark: Index an element in array.

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); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.indexOf
Map.get
Array.findIndex
Array.indexOf Object
Map.get Object
Array.findIndex Object

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser/OS: Chrome 143 on Windows

View result in a separate tab

Test name	Executions per second
Array.indexOf	14068353.0 Ops/sec
Map.get	48334256.0 Ops/sec
Array.findIndex	22477300.0 Ops/sec
Array.indexOf Object	21452514.0 Ops/sec
Map.get Object	89910304.0 Ops/sec
Array.findIndex Object	28675804.0 Ops/sec

Related benchmarks:

Index an element in array. (version: 1)

Comparing performance of: Array.indexOf vs Map.get vs Array.findIndex vs Array.indexOf Object vs Map.get Object vs Array.findIndex Object

Created: 5 months ago by: Registered User

Jump to the latest result

Array.indexOf

Map.get

Array.findIndex

Array.indexOf Object

Map.get Object

Array.findIndex Object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A