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Run results for:
Array.from() vs new Array()
Testing the difference between creating filled arrays.
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<iframe src="https://measurethat.net/Embed?id=602389" 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
new Array()
901K/s
Array.from()
433K/s
View exact numbers
Test name
Executions per second
✓
new Array()
900,569 Ops/sec
Array.from()
432,770 Ops/sec
Tests:
new Array()
new Array(500).fill(0, 0, 500)
Array.from()
Array.from({ length: 500 }, () => 0)