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Run results for:
Direct Array Access vs. New Local Constant Variable in A Loop v.2
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=492764" 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/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
Local Variable Access
551/s
Direct Array Access
314/s
View exact numbers
Test name
Executions per second
✓
Local Variable Access
551 Ops/sec
Direct Array Access
314 Ops/sec
Script Preparation code:
var arr = [ { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, { "key": "value" }, ] var newarr1 = [] var newarr2 = []
Tests:
Local Variable Access
for (var i = 0; i < arr.length; i++) { const el = arr[i] for (var j = 0; j < 100; j++) newarr2.push(el) }
Direct Array Access
for (var i = 0; i < arr.length; i++) { for (var j = 0; j < 100; j++) newarr2.push(arr[i]) }