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Run results for:
Array slice() vs. spread operator
Comparing ES6 spread operator with the slice() method
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<iframe src="https://measurethat.net/Embed?id=623497" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
7 months ago
Array.prototype.slice
8.6M/s
Spread operator
5.3M/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.slice
8,571,469 Ops/sec
Spread operator
5,310,442 Ops/sec
Script Preparation code:
var orig = Array(100).fill('some string');
Tests:
Array.prototype.slice
var copy = orig.slice();
Spread operator
var other = [ ...orig ]