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Run results for:
Compare !array.length vs array.length === 0
Compare both ways of test an empty array
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<iframe src="https://measurethat.net/Embed?id=507269" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
!array.length
1544167.4 Ops/sec
arr.length === 0
1528454.1 Ops/sec
Script Preparation code:
var arr = [];
Tests:
!array.length
if (!arr.length) { console.log(1); } else { console.log(0); }
arr.length === 0
if (arr.length === 0) { console.log(1); } else { console.log(0); }