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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0

Browser: Firefox 74

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
const num	1026391000.0 Ops/sec
const string	969582300.0 Ops/sec
var num	948845100.0 Ops/sec
var string	945385500.0 Ops/sec
let num	885888100.0 Ops/sec
let string	913601200.0 Ops/sec

Website performance monitoring

Tests:

const num
const a = 12109203910293019120392342342;
const string
const a = "12109203910293019120392342342";
var num
var a = 12109203910293019120392342342;
var string
var a = "12109203910293019120392342342";
let num
let a = 12109203910293019120392342342;
let string
const a = "12109203910293019120392342342";