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Run results for:
comparing flatMap vs filter and map in little arr length
Comparing performance of: flatMap() vs filter().map()
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<iframe src="https://measurethat.net/Embed?id=628791" 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/147.0.0.0 Safari/537.36 Edg/147.0.0.0
Browser:
Chrome 147
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one month ago
Test name
Executions per second
filter & map
3665995.5 Ops/sec
flatMap
957690.3 Ops/sec
Script Preparation code:
var arr = []; let i = 0; while (i <= 100) arr[i] = i++;
Tests:
filter & map
arr.filter(x => x % 3).map(x => x/100)
flatMap
arr.flatMap(x => x % 3 ? x/100 : [])