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Run results for:
Array.flat() vs. concat() + spreadOperator + concat.apply()
Compare the Array.flat() to concat() + spread operator
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<iframe src="https://measurethat.net/Embed?id=598650" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:137.0) Gecko/20100101 Firefox/137.0
Browser:
Firefox 137
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
concat() + spread operator
18897958.0 Ops/sec
Array.flat()
16478030.0 Ops/sec
concat.apply()
19268716.0 Ops/sec
Tests:
concat() + spread operator
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = [].concat(...params);
Array.flat()
var params = [[1, 2, params], [ "hello", true, 7 ]]; var other = params.flat();
concat.apply()
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = [].concat.apply([], params);