Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
Feature Requests
FAQ
Register
Log In
Run results for:
Array.prototype.concat vs spread operator vs flat
Compare the new ES6 spread operator with the traditional concat() method
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=563271" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0
Browser:
Firefox 131
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Array.prototype.concat
21.1M/s
spread operator
17.1M/s
Array.prototype.flat
11.1M/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.concat
21,097,136 Ops/sec
spread operator
17,070,896 Ops/sec
Array.prototype.flat
11,075,473 Ops/sec
Tests:
Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
Array.prototype.flat
var params = [ "hello", true, 7 ]; var other = [1, 2, params].flat()