Run results for: const vs let vs var vs sloppy (no push invocation) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
var	80139640.0 Ops/sec
let	16732570.0 Ops/sec
const	16018560.0 Ops/sec
sloppy	2342401.0 Ops/sec

Website performance monitoring

Tests:

var
var g = { e: [] } g.o = function(x) { g.e.push } g.o()
let
let g = { e: [] } g.o = function(x) { g.e.push } g.o()
const
const g = { e: [] } g.o = function(x) { g.e.push } g.o()
sloppy
g = { e: [] } g.o = function(x) { g.e.push } g.o()