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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Browser: Chrome 94

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
let in	3544.4 Ops/sec
var in	3583.4 Ops/sec
var out	3590.8 Ops/sec
let out	3571.4 Ops/sec

Website performance monitoring

Tests:

let in
let x; for( let i = 0; i < 1000000; i++) { x = i; }
var in
let x; for( var i = 0; i < 1000000; i++) { x = i; }
var out
let x; var i; for( i = 0; i < 1000000; i++) { x = i; }
let out
let x; let i; for( i = 0; i < 1000000; i++) { x = i; }