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Run results for:
Array Apply vs Array Spread vs Array Fill
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<iframe src="https://measurethat.net/Embed?id=487318" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
Browser:
Chrome 119
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Array Fill
15K/s
Array Spread
15K/s
Array Apply
15K/s
View exact numbers
Test name
Executions per second
✓
Array Fill
14,920 Ops/sec
Array Spread
14,730 Ops/sec
Array Apply
14,652 Ops/sec
Tests:
Array Fill
function createDateArrayInAMonth(year, month) { return new Array(new Date(year, month, 0).getDate()).fill().map((_, i) => new Date(year, month - 1, i + 1).toLocaleString()) } createDateArrayInAMonth(2023, 10)
Array Apply
function createDateArrayInAMonth(year, month) { return Array.apply(null, new Array(new Date(year, month, 0).getDate())).map((_, i) => new Date(year, month - 1, i + 1).toLocaleString()) } createDateArrayInAMonth(2023, 10)
Array Spread
function createDateArrayInAMonth(year, month) { return [...new Array(new Date(year, month, 0).getDate())].map((_, i) => new Date(year, month - 1, i + 1).toLocaleString()) } createDateArrayInAMonth(2023, 10)