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Run results for:
My Spread vs Concat vs unshift vs push
My Spread vs Concat vs unshift vs push
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<iframe src="https://measurethat.net/Embed?id=505706" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0
Browser:
Firefox 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
just push
15.4M/s
concat
11.8M/s
arrayUnshift
7.8M/s
spread
6.1M/s
View exact numbers
Test name
Executions per second
✓
just push
15,394,692 Ops/sec
concat
11,842,849 Ops/sec
arrayUnshift
7,786,537 Ops/sec
spread
6,126,804 Ops/sec
Tests:
arrayUnshift
const arr1 = [1,2,3,4,5]; const arr2 = [6,7,8,9,10]; arr1.unshift(...arr2);
concat
let arr1 = [1,2,3,4,5]; const arr2 = [6,7,8,9,10]; arr1 = arr1.concat(arr2);
spread
let arr1 = [1,2,3,4,5]; const arr2 = [6,7,8,9,10]; arr1 = [...arr1, ...arr2];
just push
const arr1 = [1,2,3,4,5]; const arr2 = [6,7,8,9,10]; arr1.push(...arr2);