MeasureThat.net

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

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15
Safari 17
Mac OS X 10.15.7
Desktop
11 days ago
Test name Executions per second
var 26017640.0 Ops/sec
let 24665354.0 Ops/sec
const 25185816.0 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()