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Run results for:
Var vs Let vs Const Performance II
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<iframe src="https://measurethat.net/Embed?id=505799" 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
Let
1/s
Var
1/s
Const
1/s
View exact numbers
Test name
Executions per second
✓
Let
1 Ops/sec
✓
Var
1 Ops/sec
✓
Const
1 Ops/sec
Script Preparation code:
var numbers = Array.from({ length: 10_000_000 }, (v, i) => i);
Tests:
Var
for (let i = 0; i < numbers.length; i++) { var number = numbers[i]; }
Let
for (let i = 0; i < numbers.length; i++) { let number = numbers[i]; }
Const
for (let i = 0; i < numbers.length; i++) { const number = numbers[i]; }