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Run results for:
Merging two arrays test
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<iframe src="https://measurethat.net/Embed?id=618764" 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/141.0.0.0 Safari/537.36
Browser:
Chrome 141
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
9 months ago
Array.prototype.push for of
69.1M/s
array.concat
21.6M/s
spread operator
15.1M/s
array.push spread
9.9M/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.push for of
69,063,800 Ops/sec
array.concat
21,611,168 Ops/sec
spread operator
15,058,423 Ops/sec
array.push spread
9,883,615 Ops/sec
Tests:
Array.prototype.push for of
const base = [1]; const added = [1, 2, 3]; const combined = base; for (const item of added) { combined.push(item) }
array.push spread
const base = [1]; const added = [1, 2, 3]; const combined = base.push(...added);
array.concat
const base = [1]; const added = [1, 2, 3]; const combined = base.concat(added);
spread operator
const base = [1]; const added = [1, 2, 3]; const combined = [...base, ...added];