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

Posted by Aleksei Yin
Aleksei Yin
4,582 Points

Declaring the fruitsLength variable

Just wondering, in the fruits.js example, did she make an error by not declaring let/const/var?

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

It's helpful to identify the course and lesson you are referring to.
You might want to take a look at this video about Posting a Question.

1 Answer

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

I recall answering another question about this 4 years ago. Odd that nothing was ever added to the Teacher's Notes.

Without the declaration, JavaScript implicitly creates a global variable. While this is not generally considered good programming practice, it is allowed in the language (as long as you are not using "strict" mode).