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Run results for:
Array.from() vs new Array() + destruct
Testing the difference between creating filled arrays.
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<iframe src="https://measurethat.net/Embed?id=629631" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36
Browser:
Chrome 148
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one month ago
new Array()
3.1M/s
new Array() + destruct
1.3M/s
Array.from()
116K/s
View exact numbers
Test name
Executions per second
✓
new Array()
3,095,143 Ops/sec
new Array() + destruct
1,302,672 Ops/sec
Array.from()
115,823 Ops/sec
Tests:
new Array()
new Array(500).fill(0, 0, 500)
Array.from()
Array.from({ length: 500 }, () => 0)
new Array() + destruct
[...Array(500)].map(() => 0);