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Run results for:
const vs let vs var (fixed) 2
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Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:127.0) Gecko/20100101 Firefox/127.0
Browser:
Firefox 127
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
2 years ago
var
26.8M/s
const
23.6M/s
let
23.4M/s
View exact numbers
Test name
Executions per second
✓
var
26,839,472 Ops/sec
const
23,593,238 Ops/sec
let
23,416,052 Ops/sec
Tests:
var
var g = []; var f = function(x) { g.push(1,2,3) }; f()
let
let g = []; let f = function(x) { g.push(1,2,3) }; f()
const
const g = []; const f = function(x) { g.push(1,2,3) }; f()