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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=505722" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
just push
34.8M/s
spread
24.8M/s
arrayUnshift
8.2M/s
concat
7.6M/s
View exact numbers
Test name
Executions per second
✓
just push
34,762,220 Ops/sec
spread
24,833,298 Ops/sec
arrayUnshift
8,208,408 Ops/sec
concat
7,632,426 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);