Benchmark: Concat performance: Array vs Object vs Set

HTML Preparation code:

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

Script Preparation code:

var baseArray = Array.from(Array(4).keys()).map(key => 'some-big-ass-string.' + (key + 1));
var baseObject = baseArray.reduce((accumulator, currentItem) => ({ ...accumulator, [currentItem]: true }));
var arraySet = new Set(baseArray);

Tests:

Array Concat
const test = Array.concat.apply([], [baseArray, baseArray, baseArray, baseArray]);
Object Concat
const test = {...baseArray, ...baseArray, ...baseArray, ...baseArray};
Concat set
const test = new Set([baseArray, baseArray, baseArray, baseArray]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array Concat
Object Concat
Concat set

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/61.0

Browser/OS: Firefox 61 on Mac OS X 10.13

View result in a separate tab

Test name	Executions per second
Array Concat	1633908.0 Ops/sec
Object Concat	679319.1 Ops/sec
Concat set	1584370.0 Ops/sec

Concat performance: Array vs Object vs Set (version: 0)

Comparing performance of: Array Concat vs Object Concat vs Concat set

Created: 6 years ago by: Guest

Jump to the latest result

Array Concat

Object Concat

Concat set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A