MeasureThat.net

Run results for: const vs let vs var (fixed)

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Run details:
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.77
Opera 91
Windows 7
Desktop
2 years ago
Test name Executions per second
var 25330434.0 Ops/sec
let 24827378.0 Ops/sec
const 5189037.0 Ops/sec
Tests:

  • var

    AخA
     
    var g = { e: [] }
    g.o = function(x) { g.e.push(...[1,2,3]) }
    g.o()

  • let

     
    let g = { e: [] }
    g.o = function(x) { g.e.push(...[1,2,3]) }
    g.o()

  • const

     
    const g = { e: [] }
    g.o = function(x) { g.e.push(...[1,2,3]) }
    g.o()