Run results for: const vs let vs var - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Linux; Android 13; 2201117SY) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Mobile Safari/537.36 ABB/3.4.5

Browser: Chrome Mobile 111

Operating system: Android

Device Platform: Mobile

Date tested: 4 months ago

Test name	Executions per second
var	9195951.0 Ops/sec
let	10468959.0 Ops/sec
const	2046484.8 Ops/sec

Tests:

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

;