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Run results for:
Array.from vs map vs Array.from then map
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=496667" 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/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Loop
997K/s
Map
556K/s
Loop push
465K/s
Array.from and Map
42K/s
Array.from
40K/s
View exact numbers
Test name
Executions per second
✓
Loop
997,028 Ops/sec
Map
556,191 Ops/sec
Loop push
464,872 Ops/sec
Array.from and Map
41,948 Ops/sec
Array.from
40,142 Ops/sec
Tests:
Array.from
Array.from({ length: 1000 }, i => i)
Map
new Array(1000).map(i => i);
Loop
const arr = new Array(1000); for (let i = 0; i < 1000; i++) arr[i] = i
Loop push
const arr = [] for (let i = 0; i < 1000; i++) arr.push(i)
Array.from and Map
Array.from({ length: 1000 }).map(i => i);