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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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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0
Browser:
Firefox 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
const
614.6M/s
let
614.1M/s
View exact numbers
Test name
Executions per second
✓
const
614,564,608 Ops/sec
let
614,148,160 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;