Benchmark: Comparisons of performance for finding a value in an array

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var lodash = _.noConflict();
var underscore = _.noConflict();
var array = [...Array(100000).keys()];
var key = 90000;

Tests:

Array.Prototype.find
const value = array.find(x => x === key);
Array.Prototype.findIndex
const idx = array.findIndex(x => x === key); const value = array[idx]
For loop
let value; for (let i = 0; i < array.length; i++) { if (array[i] === key) { value = array[i]; break; } }
LoDash
const value = lodash.find(array, x => x === key);
Underscore
const value = underscore.find(array, x => x === key);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.Prototype.find
Array.Prototype.findIndex
For loop
LoDash
Underscore

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser/OS: Chrome 83 on Windows

View result in a separate tab

Test name	Executions per second
Array.Prototype.find	73.9 Ops/sec
Array.Prototype.findIndex	74.8 Ops/sec
For loop	29.7 Ops/sec
LoDash	85.2 Ops/sec
Underscore	87.1 Ops/sec

Comparisons of performance for finding a value in an array (version: 0)

Comparing several different methods for finding an item in an array (assuming complex objects)

Comparing performance of: Array.Prototype.find vs Array.Prototype.findIndex vs For loop vs LoDash vs Underscore

Created: 3 years ago by: Guest

Jump to the latest result

Array.Prototype.find

Array.Prototype.findIndex

For loop

LoDash

Underscore

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A