i've fixed! just lost 'let'! thanks anyway!

Your code is not correctly formated so it's hard to see what it does actually. Please see here how to format code: https://docs.codewars.com/references/markdown/#code-block

Maybe your variable is not properly declared. See here: https://www.w3schools.com/js/js_variables.asp

If you really know nothing about programming it'll be hard to teach you all. You need to search online with the error messages you get. The whole documentation of JavaScript is available online.

I advice you to also read this: https://docs.codewars.com/training/troubleshooting/

but i print return min after }

Hi. You return the result immediately, after parsing the first two elements. You mustreturn only after the loop has been completed.