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Run results for:
push() vs [...] for large arrays
Comparing the various ways to append to a large array
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=536693" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:129.0) Gecko/20100101 Firefox/129.0
Browser:
Firefox 129
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Push
700K/s
Spread
8K/s
View exact numbers
Test name
Executions per second
✓
Push
700,005 Ops/sec
Spread
7,566 Ops/sec
Script Preparation code:
window.top.tests = {push:[], spread:[]}; window.test = (new Array(10)).fill(null); window.cutoff = 5000;
Tests:
Push
for (let element of window.test) { window.top.tests.push.push(element); } if (window.top.tests.push.length > window.cutoff) { window.top.tests.push = []; console.log('reset push'); }
Spread
for (let element of window.test) { window.top.tests.spread = [...window.top.tests.spread, element]; } if (window.top.tests.spread.length > window.cutoff) { window.top.tests.spread = []; console.log('reset spread'); }