Run results for: const vs let vs var

Run details:

User agent: Mozilla/5.0 (Linux; arm_64; Android 12; RMX2086) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.2332 YaApp_Android/23.110.1 YaSearchBrowser/23.110.1 BroPP/1.0 SA/3 Mobile Safari/537.36

Browser: Chrome 118

Operating system: Android 23.110.1

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

let

3.3M/s

var

3.2M/s

const

1.5M/s

View exact numbers

Test name	Executions per second
✓ let	3,251,329 Ops/sec
var	3,194,090 Ops/sec
const	1,496,196 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()