Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript

Why I'm not getting error?

<script>
 setTimeout(() => {
 alert(k)
 }) 
 let i=0
let k = i
</script>

2 Answers

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points

I can't say without knowing which environment you're coding this in but I put the code through Chrome's JavaScript console and it came up with undefined for both i and o. :)

<script> setTimeout(() => { alert(k) }) let i=0 let k = i </script>