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Run results for:
Array length variable
Loop over array with/without separate variable for length
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=577068" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Without separate length variable
29K/s
With separate length variable
29K/s
View exact numbers
Test name
Executions per second
✓
Without separate length variable
28,751 Ops/sec
With separate length variable
28,706 Ops/sec
Script Preparation code:
array = Array(10000).fill().map(_ => Math.random());
Tests:
With separate length variable
var length = array.length; var sum = 0; for (var i = 0; i < length; ++i) { sum += array[i]; }
Without separate length variable
var sum = 0; for (var i = 0; i < array.length; ++i) { sum += array[i]; }