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Run results for:
Var vs Let
Just a simple test with var/let performance in for loop
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<iframe src="https://measurethat.net/Embed?id=602243" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0
Browser:
Firefox 137
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
let
381/s
var
372/s
View exact numbers
Test name
Executions per second
✓
let
381 Ops/sec
var
372 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);