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Run results for:
empty an array in JavaScript - splice vs setting length. 444 333
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=579218" 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/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Set length to zero
194K/s
Splice
162K/s
View exact numbers
Test name
Executions per second
✓
Set length to zero
193,719 Ops/sec
Splice
161,934 Ops/sec
Tests:
Set length to zero
var size = 1000; var arr2 = []; for (var i = 0; i < size; i++){ arr2.push(i); } arr2.length = 64;
Splice
var size = 1000; var arr3 = []; for (var i = 0; i < size; i++){ arr3.push(i); } arr3.splice(64);