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Run results for:
empty an array in JavaScript - splice vs setting length faster
Based on question on http://stackoverflow.com/questions/1232040/how-do-i-empty-an-array-in-javascript
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<iframe src="https://measurethat.net/Embed?id=624296" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0
Browser:
Firefox 147
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
4 months ago
Test name
Executions per second
Set length to zero
31387354.0 Ops/sec
Splice
21210000.0 Ops/sec
Script Preparation code:
var size = 10000; var arr = []; for (var i = 0; i < size; i++){ arr.push(i); }
Tests:
Set length to zero
arr.length = 0;
Splice
arr.splice(0, arr.length);