Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
flatMap vs for...of
Go to the benchmark
Embed
Embed Benchmark Result
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Browser:
Chrome 136
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
flatMap
33474.2 Ops/sec
for of
172641.9 Ops/sec
forEach
77270.0 Ops/sec
Script Preparation code:
xs = new Array(1000).fill("world")
Tests:
flatMap
xs.flatMap((x) => ["hello", x])
for of
const out = [] for (const x of xs) { out.push("hello"); out.push(x); } return out
forEach
const out = [] xs.forEach( (x) => { out.push("hello"); out.push(x); }) return out;