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Run results for:
spread() vs flat()
Compare the new ES6 spread operator with the traditional concat() method
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<iframe src="https://measurethat.net/Embed?id=553964" 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/17.3.1 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
spread
482317664.0 Ops/sec
Array.prototype.flat
9468837.0 Ops/sec
Tests:
spread
var params1 = [ 1, 2 ]; var params2 = [ "hello", true, 7 ]; var other = [...params1, ...params2]
Array.prototype.flat
var params = [[1, 2, params], [ "hello", true, 7 ]]; var other = params.flat();