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Run results for:
Push-spread vs concat assignment
Comparing a few various ways to append to a large array
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=523776" 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/125.0.0.0 Safari/537.36
Browser:
Chrome 125
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Push
663K/s
Spread
1K/s
View exact numbers
Test name
Executions per second
✓
Push
662,837 Ops/sec
Spread
1,318 Ops/sec
Script Preparation code:
window.top.tests = {control:[], spread:[]}; window.test = (new Array(10)).fill(null); window.cutoff = 5000;
Tests:
Push
window.top.tests.control.push(...window.test); if (window.top.tests.control.length > window.cutoff) { window.top.tests.control = []; console.log('reset control'); }
Spread
window.top.tests.control = window.top.tests.control.concat(window.test); if (window.top.tests.spread.length > window.cutoff) { window.top.tests.spread = []; console.log('reset spread'); }