Run results for: Var vs Let

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.0.1

Device Platform: Mobile

Date tested: one year ago

var

3K/s

let

2K/s

View exact numbers

Test name	Executions per second
✓ var	2,673 Ops/sec
let	2,446 Ops/sec

Tests:

var
for(var i=1;i<=1000;i++) console.log(i);
let
for(let i=1;i<=1000;i++) console.log(i);

Run results for: Var vs Let

Just a simple test with var/let performance in for loop

var

let