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Run results for:
reduce.concat() vs flat()
Compare the new ES6 spread operator with the traditional concat() method
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<iframe src="https://measurethat.net/Embed?id=489674" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 120
Operating system:
Android
Device Platform:
Mobile
Date tested:
2 years ago
reduce + Array.prototype.concat
2.0M/s
Array.prototype.flat
486K/s
View exact numbers
Test name
Executions per second
✓
reduce + Array.prototype.concat
2,012,887 Ops/sec
Array.prototype.flat
485,517 Ops/sec
Tests:
reduce + Array.prototype.concat
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = params.reduce((acc, val) => acc.concat(val), []);
Array.prototype.flat
var params = [[1, 2, params], [ "hello", true, 7 ]]; var other = params.flat();