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Run results for:
let vs const in tight loops
Checks whether using const helps for performance or not compared to using let everywhere
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<iframe src="https://measurethat.net/Embed?id=600559" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 135
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
let
75.0M/s
const
68.3M/s
View exact numbers
Test name
Executions per second
✓
let
75,047,360 Ops/sec
const
68,349,120 Ops/sec
Tests:
let
let x = 100; let y = x + 1; let z = x + y;
const
const x = 100; const y = x + 1; const z = x + y;