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 JavaScript Arrays Multidimensional Arrays Create a Multidimensional Array

Posted by Peter Huang
Peter Huang
5,427 Points

Let items dont need to be inside function?

I've removed -- let items = ''; --

from inside function and put it outside function and still works. Why is that? Function can access outside scope so if so, I dont need to put let items = ''; - inside function anymore correct?

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

As you discovered, it still works wherever it gets defined. But the advantage of defining it inside the function is to limit its scope to just that function. There's no need for it to occupy permanent space in global scope.

Peter Huang
Peter Huang
5,427 Points

thank you