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Run results for:
array operations vs generators vs for loop
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<iframe src="https://measurethat.net/Embed?id=578135" 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/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
array operations
156/s
for loop
142/s
generators
131/s
View exact numbers
Test name
Executions per second
✓
array operations
156 Ops/sec
for loop
142 Ops/sec
generators
131 Ops/sec
Script Preparation code:
const array = Array.from({ length: 10_000 }, (_, i) => i);
Tests:
array operations
array .filter((el) => el % 2) .map((el) => el ** 2) .forEach((el) => console.log(el));
generators
function* filterOddIt(it) { for (const el of it) if (el % 2) yield el; } function* squareIt(it) { for (const el of it) yield el ** 2; } function printIt(it) { for (const el of it) console.log(el); } printIt(squareIt(filterOddIt(array)));
for loop
const result = []; for (const el of array) { if (el % 2 == 0) continue; const r = el ** 2; result.push(r); console.log(r); }