Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
Feature Requests
FAQ
Register
Log In
Run results for:
push array elements using spread vs iteration
Compare push using a spreaded array versus adding items one at a time.
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=488447" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
spread
37K/s
iteration using for...of
28K/s
iteration using for
28K/s
iteration using forEach
11K/s
View exact numbers
Test name
Executions per second
✓
spread
37,481 Ops/sec
iteration using for...of
28,338 Ops/sec
iteration using for
28,284 Ops/sec
iteration using forEach
11,088 Ops/sec
Script Preparation code:
var numSamples = 10000 var data = "TEST DATA" var makeArray = len=> Array(len).fill(data)
Tests:
spread
var a = [] var b = makeArray(numSamples) a.push(...b)
iteration using forEach
var a = [] var b = makeArray(numSamples) b.forEach(it => a.push(it))
iteration using for
var a = [] var b = makeArray(numSamples) for (var i=0; i<b.length; i++) { a.push(b[i]) }
iteration using for...of
var a = [] var b = makeArray(numSamples) for (var it of b) { a.push(it) }