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Run results for:
forEach vs map vs for
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=617481" 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/140.0.0.0 Safari/537.36
Browser:
Chrome 140
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
10 months ago
for
120.0M/s
forEach
27K/s
map
19K/s
View exact numbers
Test name
Executions per second
✓
for
119,973,080 Ops/sec
forEach
27,238 Ops/sec
map
18,946 Ops/sec
Script Preparation code:
var arr = new Array(15000); arr.fill({ id: 0 }); arr = arr.map((el, idx) => el.id = idx); var foo = Math.floor(Math.random() * 15000);
Tests:
forEach
let indexes = []; arr.forEach((num) => indexes.push(num+1));
map
const indexes = arr.map(num=>num+1)
for
let indexes = []; for(index of indexes){ indexes.push(index+1) }